Pet Rats/Heat


Hello, I currently have five girls and two boy rats (in separate cages), and I waswondering if you knew how to tell if a rat  is in heat?

I am so sorry for just now responding to you.  Your question was placed in the "question pool" for some reason which doesn't show up in my private question list.

I assume when you ask how you can tell if a rat is in heat, that you mean female rats.  Females as young as 5 weeks can get pregnant and can become pregnant whether or not they are in heat, so be careful about keeping the 2 sexes separate at all times.

Females go into heat every 4 to 5 days.  When she is in heat her vagina will gape open wheras it is usually tightly closed. Usually there will be behavioral signs too. Stroking her back will usually cause a rat in heat to perform the mating “dance”. She may first dart forward or spin around, then she will brace her legs stiffly, lift her head and tail, and vibrate her ears!

Please let me know if I can help with anything else.

Pet Rats

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Irene Murphy


I can answer a variety of questions regarding adoption and care of pet rats throughout their lifetimes, including questions about their health and well being, temperment, diet, bedding, cages, toys, etc. I will try to answer your questions to the best of my ability in a timely manner and I have an abundant amount of resources to help me to help you with your pet rats. I love rattie pictures, so include pics with your question if you can. You may ask me medical questions, but please be advised that I am not a vet. I may use my resources to answer some medical questions, however, I will need to refer you to your local vet with medical questions that I feel I am not qualified to address.


I have been a huge rat enthusiast for many years. Since becoming a rat owner, I have educated myself in all areas of pet rats from every resource I could find including the internet, books, conversations with local exotic vets, as well as several local rat breeders.

I have a college degree but not in the area of animals. I have obtained my extensive experience and knowlege of pet rats all on my own because in my eyes, pet rats are the most interesting and fascinating creatures you can ever imagine to have as pets. I also am saddened by how mislabeled and misunderstood these amazing and extremely smart animals are by the majority, and my mission in life has become to educate and change as many people's perceptions of rats as I possibly can.

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