the flea sucks the dogs blood, therefore the flea benefits, while the dog detriments...
parasitism
There is no symbiotic relationship, fleas are parasites.
Parasitism
parasitism
they have a parasitism relationship
There is no symbiosis between a flea and a dog. The flea is a blood eating parasite on the dog. There is benefit to the flea but not to the dog so there is no symbiosis.
parasitism
parasitism
an example would be a flea and a dog. The flea drinks the dogs blood, but does nothing beneficial for the dog.
I would say parasitism - host (dog) and parasite (flea).
parasitism
The flea feeds on the mouses blood.