Help! Does my cat have fleas? [View All]

and if so what should I do? Seriously - I am a relatively new cat butler and I have noticed when combing him that there are little black specks in his longish fur. As I was picking a few of these from his coat I saw a bug crawling down by his skin and picked if off. It didn't look like a flea AFAIK, but I don't like the idea of bugs on my cat.

He doesn't scratch himself like I'd expect if he had fleas and is otherwise a happy and cuddly 9-year-old cat. I have no other animals in my house, so whatever he has he had to bring with him from the foster's house where I picked him up seven weeks ago. There were five cats and a dog in that house.

What to do? Cat experts, please weigh in.