If your dog has been scratching himself more than normal it could be due to lice. Lice are very small, but can usually be seen by the human eye. They look like little black dots and have a clear lining around them. They do not really look like bugs, but more like dirt. It is very easy to see the lice if your dog is infested, but many pet owners miss them especially in cases where dogs only have a few lice on them and they can be very hard to find. They attach themselves to the skin, so you have to push the fur around to look for them.
If you suspect lice, make an appointment and come and have us check your dog out. Lice is EASILY treatable with either a lice bath or a topical treatment like Frontline, K9 Advantix or Revolution (we offer all of the above). Below is a picture of a maltese with lice.