What schools in the los angeles area are specialized in veterinary medicine?

There are two vet schools in California. One is up at UC Davis and the other is Western University in Pomona. It is not necessary to attend one of those schools for your pre-vet work though. You can do that at any school. If you truly want to stay in southern California then Western is your only option for vet school and it's extremely expensive and they give no preference to California residents.