How many hearts does an octopus have?
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
Reference: Merriam-Webster
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
Manta rays have one of the largest brain-to-body ratios of any fish.
Prairie dogs, those little pups popping in and out of holes on vacant lots and rural rangeland, are talking up a storm. They have different "words" for tall human in yellow shirt, short human in green shirt, coyote, deer, red-tailed hawk and many other creatures.