I have a 2 year old shih tzu female that is a few weeks pregnant.
Today I applied revolution on all my dogs for their heartworm/flea/tick preventative and as I was giving her some loving, I felt a pea sized bump on her head.
What is even more odd, is that I can move it. It's under the skin, and feels hard; She doesn't react to it at all. But I can move it from the middle of the back of her head, to several inches under that towards her neck, and wiggle it about an inch or so right or left. I'm pretty knowledgeable on dogs, but I've never experienced anything like this before. I tried to take several photos, but with all her hair, you can't really notice a difference, but you can certainly feel it.
As always I will be taking her into our vet as soon as we can be scheduled, but if I could get some sort of idea as to what I could be dealing with prior to taking her in, that would be great.