Here are two jokes about dogs to ensure your visit is not entirely wasted.
1. I went to the zoo last week. It only had one animal, and it was a dog. It was a shitzu.
2. I took my dog to the vet's last week. I said: "My dog is cross eyed. Is there anything you can do about it?" The vet said: "How interesting. Let me take a look." He lifted the dog onto its hind legs, held its front paws, and peered into its eyes for a long time.
Eventually, he said: "I'm sorry, I'm going to have to put him down."
I said: "Surely you don't have to put him down just because he's cross eyed?"
He said: "No, he's heavy".