Our rat Peaches, who is very overweight, smells a bit 'fishy' down below. I took her to the vets about 3 weeks ago, and the vet tested her urine and said she had a mild infection. He prescribed a week of antibiotics. Clavaseptin. I'm wondering if she has the same problem again, or if it's just difficult to keep herself clean because of her fat belly. We plan to put her on a diet after our old, lumpy rat Bailey passes away. At the moment we don't want to limit the food in the cage, as Bailey is underweight apart from having 3 big lumps. Tbh Peaches isn't eating much atm anyway, so I am a bit worried. Yesterday she was chewing at cables and the carpet, which she doesn't usually do. I checked her teeth and they look OK, I think, not overgrown. We've been bathing her daily (just warm water on her lower regions only, not completely submerged). Any advice please? We have 3 rats altogether, there's another one called Treasure.