Dogs and pigs, among other animals (fruit bats, non-human primates) can get the disease. Bats and 'bushmeat' are considered to be the place the outbreaks start, but dogs have been shown to be seropositive in outbreak areas.
Not much is understood about animal vectors for Ebola, but the idea of the disease getting into canine populations or in feral pig populations presenting a natural reservoir in the US has me concerned.
Do you know of any research past or present in this area? We found a couple of papers, but not much.
A literature review shows very little anecdotal answers as to which animals may be harbouring Ebola other than the Fruit Bats and Rats. After Ebola has killed 100K+ there may be some money sent that way for a study to be funded.