The flea feeds on the mouses blood.
the flea sucks the dogs blood, therefore the flea benefits, while the dog detriments...
The flea has a " Host " from which it draws blood . A flea is a parasite.
fleas feed on blood
The relationship between a flea and cat's fur is that of parasite and host. The flea is a parasite that feeds on the blood of the host.
The dog is the "host" to the flea which is a "parasite".
Mosquitoes acquire blood by piercing the skin of their victims. Their proboscis or tube-like mouth acts as a straw to draw blood out of the body.
they puncture your skin and suck blood
mouth
Fleas is a homonym (or homopone) for flees.
parasitism
They suck blood and gets time to digest it.