Spilopsyllus cuniculi
![Fleas may cluster round the base of a rabbit's ears](/Images/godic/202502/12/Conejo_astronomo2_cropped3355.jpg")
Spilopsyllus cuniculi, the rabbit flea, is a species of flea in the family Pulicidae. It is an external parasite of rabbits and hares and is occasionally found on cats and dogs and also certain seabirds that nest in burrows. It can act as a vector for the virus that causes the rabbit disease myxomatosis.