The animal that has 32 brains is the leech and the sperm whale is also the animal that has the largest brain.
The leech is the animal with 32 brains and a leech's internal structure is segregated into 32 separate segments, and each of these segments has its own brain.
Leech is an annelid.
The sperm whale is also the animal that has the most brains as in being the largest brain.
The largest brains are those of sperm whales, weighing about 8 kg (18 lb).
An elephant's brain weighs just over 5 kg (11 lb), a bottlenose dolphin's 1.5 to 1.7 kg (3.3 to 3.7 lb), whereas a human brain is around 1.3 to 1.5 kg (2.9 to 3.3 lb). Brain size tends to vary according to body size.
The only animal that is known to have 32 brains is the Leech.
A Leech has 32 brains and also have 10 stomachs and 18 testicles.
Leeches can latch onto your skin and suck out blood and they can be painful to remove so it's best to avoid them if possible.
However leeches do have benefits to humans such as cleaning infected wounds.
Even maggots while gross have been used and are sometimes still used to clean a persons infected wounds if the person allows it.
My father had an infected wound and he had maggots clean his wounds and it really helped although it felt funny to him.
A leech is an invertebrate animal that belongs to the phylum Annelida, a zoological category that includes more than 15,000 species of segmented bristle worms and 650 species.
Not all leeches suck blood though but most do.