From the forum: "Can a dog go through menopause? Daisy is a pitt bull mix that I adopted from a rescue group (Happy Tails, CA) about a year ago. The vet thinks she is between 5-8 years old. She has had one litter after another and had to have mastectomy after being spayed. Sometimes when I pet her head at night the top of her head seems to be very hot while the rest of her body is not. I had her tested for thyroid and she was borderline. Any ideas?"