I wanted to find out if anyone knows much about urinary tract infections in a cat? I just had to take my 3yr. old cat to the emergency vet because he was acting very strange. He is normally a very playful...almost too playful cat, but today he would not respond to my calling him. My fiance noticed that he was squatting wierd like he was trying to urinate. We took him to the emergency vet and they said he had crystals in his urine and would have to keep him overnight. They also said we caught it fairly early. Has anyone else had a cat experience this...what should I expect? What can I do to stop this from happening again?