Dipylidium caninum, also called the flea tapeworm or the double-pore tapeworm, is a cyclophyllid cestode that infects organisms afflicted with fleas and canine chewing lice, including dogs, cats, and pet-owners, especially children.
Tedford was one of the foremost authorities on the evolution of Carnivores and had been working, often with Prof. Xiaoming Wang, on the fossil history of the Canidae establishing the basis on the evolutionary relationship of canids over the past one hundred years.