Took the dog to the vet for her checkup. Spaniels tend to have trouble with their anal glands, and she's always scooting along the carpet, so I put on some latex gloves and the vet gave me a hands-on lesson in how to express her anal glands. I'd tried to do it before on my own, but hadn't been able to find them or figure out how to squeeze them.
Also, she usually has no interest in other dogs, and often snaps at them if they try to say hello, but she took an interest in a pitbull at the vet. Unfortunately, the pitbull had it's own dog-aggression issues and I had to keep her away from it.