Pyma Rattery

Formerly Pymatuning Valley Rattery. 15 years experience.


Pyma Rattery Lines

Lines can be confusing as they often overlap or relate in some way, but some of our lines are very distinct. This page attempts to break it down.

Russian Blue Agouti

The Russian Blue Agouti focus came out of my Russian Blue line. It began to produce these gorgeous Russian Blue Agouti Self rats with an almost marble look to their ticking. It all began with PYMA Alaric (left). The photos above represent three generations (Alaric - Squishy - Mouse). This line will focus on Russian Blue Agouti standard ears and coats. The line also includes, Russian Blue, Agouti, and Black. Sometimes R.E.D. pops up in the line, Alaric and Squishy both carry it, but I will be attempting to breed that out for a stronger blue. While the focus will be on improving the Russian Blue Agouti, Russian Blue will also be improved upon. Dumbo ears and velveteen coats are also probable as I work on this line. This line is known for its longevity, with PYMA Alaric being the eldest rat currently at the rattery (nearing 5 years old). I would love to introduce harley coats to this line in 2017.

Black Eyed Whites/Marked

Pyma Arabella

BEW Dumbo Female

PYMA Booger (Boo)
BEW Standard Ear Male

BEW baby with a few specks of color.

This line is related to the Russian Blue line. It often includes black and agouti rats, as well as Russian Blue. During my journey towards Black Eyed White rats I've discovered some beautiful Variegated rats. I've also had absolutely perfect masked markings. I will not be breeding any Black Eyed White rats to Black Eyed White rats, so the markings typically vary and Black Eyed White is usually included in the litter, sometimes with markings such as berkshire and variegated. This line is bred from capped markings with large head spots, so it is free and clear of SOX10 genes to date. Recessive blazes are frequently seen, but no markings linked to megacolon in rats have ever been included. This line, in 2016, made its way to breeders across the United States and Canada, where it has continued to produce wonderful marked rats, as well as MANX which runs unpredictably in the line. This line comes in standard and dumbo ears and is at this time only available in standard coat.


PYMA Uno - American Blue Capped w/headspot "Hairless" Dumbo.

PYMA Cinnamon Girl - American Blue Agouti Rex Dumbo

This line has recently been merged with the Russian Blue line for longevity. Thus, it will optimally be an American Blue/Russian Silver line and will include a lot of dwarfs. I have also recently introduced mink genes to work towards mink-based-platinum. This may eventually become two separate lines, but that is to be determined. The outcrosses are necessary to increase longevity, as the original line wasn't typically above average in that regard. I have added mink into the line to work back towards mink-based-platinum, one of my favorite colors!


Our hairless line is part of the American Blue line, but it is also distinct in that our hairless are typically very naturally well-tempered. Some of the best rats ever produced here have been of the hairless variety. 


PYMA Hades

Red Eyed Black Marten Dumbo Doe

PYMA Zodiac

Russian Agouti Marten Dumbo (faded to white, now has a pointed nose).

ROAR Sabbath

Black Marten (black eyed) Dumbo

This line was acquired in 2015, from two ratteries in Canada (Pixie's Pocket Pets and Atlantis Rattery). The rats are very beautiful, but require a lot of work on temperament and type. We will be working on darkening the black Martens back to what they are meant to be, as well as fixing the ears and wonky body type that comes along with these guys. Temperament was so-so on the imports, with one of the rats being noticably better tempered. He is the only one I chose to breed at all. 

In 2016, I imported more martens from Exotic Whiskers Rattery in Canada. The goal is to improve temperament. I also acquired the satin gene with the new martens. I also hope to work with harley coated martens as well and will work to develop that in 2017.

Update 2017: My original marten line has improved drastically and has recently gotten rave reviews from adopters. I am super proud of the improvement thus far and can't wait to see how much further we can go. 

The martens that I brought into the rattery in 2016 did not work out how I had hoped. The temperaments were not an improvement over the marten I had already been working on and it would be a disservice to breed them into that line. I did breed the new rats to each other to see how the babies would turn out. It was a very small litter and I did get one satin boy. The temperaments were poor enough that only the satin boy is worth working with. This line will be kept separate in an attempt to improve the satin gene. Once the temperament is better, I will evaluate what to do with the coat type.


ROAR Tidbit

Burmese Dumbo Rex Dwarf

PYMA Wheatney

Wheaton Burmese Dumbo (Standard Size)

RMBL Thaddeus

Wheaton Burmese Rex Dumbo

Our Burmese rats come in a variety of colors, shapes, and sizes. We will be focusing on Burmese Dwarf rats, but also have standard sized Burmese. We originally brought in Burmese rats from three different Canadian ratteries. I quickly deemed the rats from one of the breeders as pet only quality. The temperament was horrible on these rats. Thus, after starting with less than planned, this line has had a slow progression and we're still deciding where exactly we want to take it. I opted to take my chances and begin with less, rather than even bother with the poor temperaments, but all things considered this line is coming along quite nicely. It has been outcrossed and the results were really good. At this time these rats come in rex and standard coat only and are exclusively dumbo.

*So far, I have not been overly impressed with any burmese I have brought in, and I have tried to get many different lines from different breeders. I may work on this line more behind the scenes until I 'figure it out'. The dwarf Burmese that I have are perfect, so I may try to work with it from that angle. 

Update 2017: After further temperament assessments and one litter from a Burmese rat I imported at the end of 2016 (She only had one pup, who earned the name "Psycho B' if that tells you anything), I have decided to try to work with Burmese from my dwarf line only. They do not have temperament issues at all, so it seems silly to try to start from subpar rats just to get standard sized Burmese. After attempting to get Burmese from FOUR breeders, I am over it. I will try to bring it out into standard sized rats, but right now I am down to one breedable Burmese dwarf buck due to issues with dwarf females giving birth. We will see how it works out. I hope I don't lose the variety entirely. I had to make a tough decision because I have a lot of lines that need drastic improvement and it's more difficult to be successful if I were to add Burmese to that list. It will be much better to begin from my dwarf line where temperaments are very good.


PYMA Remus

Russian Cinnamon Silvermane Dumbo

RMBL Tycho Brahe

Line Founder - Cinnamon Silvermane

PYMA Lupin

Agouti Silvermane

I imported Silvermane from Rambling Rats in Canada (2015) and we had our first litter in the spring of 2016. I am very impressed with the founder of the line, Tycho Brahe, a beautiful Cinnamon SM. He displays none of the known issues in the current SM lines. He is sweet, affectionate, and brave. He is incredibly smart and expressive. His first litter was NOT a full outcross. The doe I chose was a non-SM out of an SM litter from another breeder. This test breeding was successful in that it showed me what I am working with. I did not handle the litter overly much as I wanted to see their natural temperaments. It was about a 50/50 split with few extremes on either end of the spectrum. There was one male SM who hated being handled (he is retained as pet-only), and a couple of females who took a little time to come around and were very squeaky. There was ONE female with an excellent, natural, completely a-w-e-s-o-m-e temperament. She is non-SM and I retained her for observation and possible breeding, which I would NOT consider unless she was absolutely excellent, which she is! Unfortunately I got no female SM's in the iltter, but I retained three males, including one non-SM harley coat. These boys will be watched closely for any health or temperament issues, particularly with other rats. As of now, both Tycho Brahe and all of his sons live in large rattie communities with no issues. I will be working extensively with this line. I have not decided if I will keep the harley in the line, or breed it out in favor of focusing on SM. Since SM is dominant, I will decide as I go. Right now the Silvermanes come in standard and dumbo as well as standard and harley coats, no rex. The line is ripe with Mink, but I would like to see myself focus on Black SM, Agouti SM, and Russian Blue SM. Time will tell, as this is really new.

Update 2017: This line has improved drastically. Outcrossing to my Russian Blue Agouti line helped immensely. I anticipate it will be one of my best tempered lines in 2018. The current young buck that I am waiting on to mature (see photo below) is absolutely phenomenal and I can't wait to further solidify the good temperaments in this line. The next generation will also finally include colors other than mink, agouti, and black, as well. The harley has been bred out, though it's possible it could pop up at some point. Keep an eye on this line, it is quickly becoming my pride and joy.

PYMA Severus Dec 2017.


The founder of this line, MAP Falcon, has been a real treat to have around. The line does display issues with small eyes. Falcon has one eye that is significantly smaller than the other. As of the beginning of the year 2017, he has not yet been bred. I will be outcrossing him and evaluating the eyes of the babies in the litter before deciding how to proceed. His temperament is excellent and he does not display the typical nutrition/teeth issues that Marbles are known to have (yet). It would be a shame to throw that away over some little eyes, which can hopefully be improved.
Update 2017: This line has been improving at a decent rate, but still has a long way to go. I have split it into two different directions which will be line bred back together eventually. Second generation I retained all marble rats from the litter. One male did end up with malocclusion issues at maturity, which is very disappointing. It seems there are few if any marble lines free of this issue yet. Out of 8 marble rats that I still have here, only one has had the problem. Temperament-wise, there are some things that need worked on. These rats do not have any of the major temperament issues of some of the other lines I'm working on, but they just aren't quite "there' yet. I do anticipate possibly releasing marble to the public at some point in 2018, but it will be under contract with the agreement of frequent updates on health and temperament and the disclosure that the rats need to be watched for issues with their teeth, possibly requiring trimming. 


Imported from Rambling Rats in Canada in late 2016, the downunder line will be evaluated and potentially added to my marked line to create a separate variegated downunder line. At this time they are only standard coats and will be mostly standard ear as well. These rats need a lot of work, so there will be limited availability until further notice.

Update 2017: These rats were a hot mess! I have seen worse (see Burmese and Essex), but in general these rats are more anxious than most poorly tempered rats I have encountered. It is a different kind of poor temperament. My first attempt at an outcross into one of my better lines resulted in no DU babies (just a siamese, but yuck! I do not want to keep siamese in this line). I did try again by combining the DU with marble. This actually somehow seemed to show a degree more of temperament improvement and I did get a few DU to work with out of it. I am only at the state of inbreeding this generation. Next step will be to outcross again or linebreed. I have a DU doe currently on babies and she is much less anxious with her pups than previous generations. That is a good sign. I do not anticipate this line being available to the public until 2019.


This line will be available on a very limited, pet-only basis. I will be working on establishing them and evaluating them through 2017. This line will also be introducing the color chocolate to my rattery. Upon initial inspection it appears there may exist some dominance issues in the line, though the rats are living in large colonies they seem to be higher up on the social ladder and tend to be quite obvious about it. I will be watching this closely and will be retaining most of the babies (especially males) for the first few generations to evaluate them further. This will be slow going.

Update 2017: This was a challenging line. My founding buck and doe each had their own issues. The buck was dominant/aggressive towards other rats but great with me. The doe HATED me but was docile with her cage mates. Though she never bit me, she was capable and willing to do so. I had to choose which battle I wanted to fight. I opted to breed the female and not the male. Temperament towards people is easier to evaluate and identify than dominance issues and breeding the buck would have only guaranteed perpetuation of the problem. So far, I have seen NO indications of further rat-to-rate aggression in the line. I also outcrossed the initial doe to my very best tempered line. The improvement in one generation was absolutely astounding. We are now several generations in and I cannot say enough good things about the good rats in this line. There are still wonky babies at a higher ratio than I like to see, but definitely nothing even close to how the line started. 


I have yet to determine if this will be another separate line or if it will be integrated with others. I have several lines that include mink-based rats at this time, but chocolate is new. Mink comes along with the chocolate, which is coming from the Essex line. I will likely breed it in the Essex line but may also bring it out with much needed outcrossing into other lines/varieties. We will see.


TBD. I got talked into bringing in a frost buck with my last import. I think Frost looks so similar to Silvermane and I'm not sure that it's something I wish to pursue. The buck will be evaluated and it's possible we'll start working with Frost in late 2017 or 2018. We will see how the buck develops and if it's different enough from SM for me to be interested ;)

Update 2017: I did try to breed my frost import buck. He was decently tempered but his babies weren't.  I got a little too picky and may have lost the frost gene as a result. However, some weird/unidentified for sure colors did come out in the second generation that I am going to try to explore. Unfortunately, the temperament is crap on these rats so this will be something I will play around with on the side and will likely not pursue beyond a test breeding out of curiosity.



Commonly American Blue, but can be Russian Blue, Mink, Agouti, Black, or Cinnamon. These guys are typically very healthy for hairless rats. I have not seen any eye issues in my hairless rats and the skin is usually in good condition unless it becomes scratched by cagemates. As of 2016, my hairless rats live healthily and happily in colonies with other coated rats and do not need any special care or treatment to live long, happy lives.


My goal with Harley coats is to breed them in marten, siamese, russian blue, mink, and dove. So far I have had good luck with my harleys. I do not see any of the typical harley issues except for skin issues, which are remedied with diet and bedding accommodations. My harleys do well on a low protein diet and paper bedding. Wood beddings tend to irritate their skin. 



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