Adopting pet mice is a big moment for anyone. Although a mouse doesn’t have the same demands as a cat or dog, caring for one isn’t just a walk in the park. You need to consider factors like how many ...

Dr. Marty Becker is the resident veterinarian on "Good Morning America" and the author of two new books, "Why Do Dogs Drink Out Of Toilets?" and "Do Cats Always Land On Their Feet?" Write to him in ...