Get ready for a long post....Me and my wife consider ourselves to be well educated about chinchilla care. We own 2 chinchillas, both males. Our first chinchilla we got from petco, he has no problems at all. Although we suspected he wasn't very well taken care of. we've had him for about a year...our second chinchilla..we should have known better...he was a spontaneous buy from petsmart. he was very relaxed, and was comfortable around humans. The first day we brought him home...he started having diarrhea..we then got snowed/iced into our house. So we could not get him to a vet. he then started developing crust around his eye. Petco's policy is that you can "return" the pet, within 14 days, and they will take him to the vet, and you can buy him back. After the snow cleared up we took him to petsmart and returned him so he could go to the vet...That day, they called us saying the vet weighed him, checked his weight, his respiratory system and everything. He was 100% fine. A few days went by...he started getting worse...His eye was swollen shut, he continued to have soft stool and started loosing weight... and coughing. not wanting to take him back to petsmart, we spent over 200 dollars taking him to the vet. The vet told us he was very very ill. he had a respiratory infection and was very under weight...She called petco for us chewing them out saying that they need to take care of their animals.... The vet told us, it would be an uphill battle and very little chance he would make it. That day, we went to petsmart and DEMANDED an excuse for why this happened. They treated us like we were crazy, and that they didn't care if the chin lived or died. That was the moment i realized i'm never buying anything from petco or petsmart again. They abuse their animals, they don't take pride in what they do. Our chinchilla has been nursed back to almost full health...I don't regret buying him, because we saved his life...But from now on I recommend to all of you, don't buy from these companies. They breeders they get them from are terrible, the way they "care for their animals are terrible. They are in it to make money and that is the bottom line... Buy from online stores.