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I can answer any questions about pet rats, but you will probably be able find answers to simple questions more quickly on my website at If you have a life-threatening emergency you can try calling me at 530-899-0605. I am not usually on the computer on the weekend.

Experience in the area

I have been "The Rat Lady" since 1985 and am recognized as one of the world's experts on pet rats. I have 3 published books and already answer lots of questions about rats daily.


President of Rat Assistance & Teaching Society


I am a monthly columnist for Pet Business magazine, and my writing has appeared in other magazines. I have 3 published books.


BA in Animal Behavior

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Anne07/25/15101010Awesome knowledge and quick response time too! .....
Anne07/25/15101010Debbie was quick to respond and also .....
Connor07/16/15101010Thank you for all the help!:)
Karrell07/03/15101010Thanks so much Debbie! I knew you .....
Charlotte06/25/15101010Thank you so much for a quick .....

Recent Answers from Debbie Ducommun

2015-07-25 PLEASE HELP ! Unsure what to do:

Hi Chinue,  What looks like hiccups is a sneezing jag caused by the mycoplasma respiratory infection. Sometimes they make an audible noise, but not always. The reason I know this is because lab rats, who

2015-07-24 Follow-up: Re: cage&cats:

Seems like the scent ought to fade eventually. And rats who are afraid of cats can get used to them and their scent and get over their fear. You'd just have to see how it goes. Maybe try a product that

2015-07-24 My pet rat has a weeping tumor:

When you say on her side, like under her arm? Because that would be the closest place to the side where a mammary tumor is likely to grow. You might want to read the section about malignant mammary tumors

2015-07-24 Cage brought home-nervous behavior...:

Hi Anne,  Well, this is certainly different from the usual questions I get!  I'm not sure I've heard of anything quite like this before. I wouldn't think the smell of a guinea pig or chinchilla would be

2015-07-23 My pet rat has a weeping tumor:

Hi Lu,  I do not think she needs to be euthanized as long as she is behaving so normally. Most tumors do not seem to cause rats any pain or discomfort. Where exactly is this tumor? What color is the fluid


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