My dog can't seem to get comfortable, like he is pacing back and forth and when he finally dogs lay down he gives off a whimper like it hurts him. He is refusing to eat everything and he is constantly wanting to go outside which is weird because he hates going outside. He isn't throwing up or anything but his hair is coming out. I was barely petting him and a lot of hair came out. It looks like he now has a bald spot. He is a 10 year old golden retriever with fatty tumors and a history of cancer. This started about 5 hours or so ago. Any ideas about what it is would be helpful. We are taking him to the vet in the morning.