Lookalikes
for Cat Flea
To the unaided eye, the dog flea and human flea are tough to tell apart from this species; a confident call needs magnification of fine head and body features. Still, UF/IFAS identifies the cat flea as the flea most commonly found in and around homes, so a flea pulled off a household pet is the likely default. Source: https://ask.ifas.ufl.edu/publication/IN137