Hello, I took my dog to the vet about some signs of a UTI. She said that if it continues then to take a sample and bring it in. After that I didn't really see/notice any signs. Since yesterday she's been showing every sign of a UTI that I can find on the internet. Would a puppy be less excitable if she had one? How long would it take to kill a dog? Is an arched back normal? I'm quite worried so I'm going to get a sample and bring her to the vets in the morning.