Target practice is one common use. They can also be used in animal testing, probably the 2nd most common use. A third use would be as a food source, though that is not highly recommended. They could also be used as disease vectors, and though this is a theme in some popular Horror movies, I do not know that it has ever happened in reality.
Rats affect humans with many of their diseases.
because humans kill rats and rats dont want to die
because i hate rats that is why
I think there are more rats in the world than humans.
the rats eat meat as humans do
rats do not have a gall bladder
Yes rats can cause harm to humans by spreading disease.
They dont. Any interraction is purely coincidental. Rats hate humans. They only like rats. Get some real friends man....
Rats carry lots of fleas. Rats are to fleas what the subway is to humans !
Yes, rats are almost everywhere that humans have went to.
The fleas were the actual carriers of the plague. The fleas, preferentially sought out rats, not humans, but would bite humans, of course. The problem was that at that time in history, anywhere there were humans, there were rats. Lots of rats.
Scientists experiment with rats for many reasons. A rat's digestive system and organs are very closely like humans. They use rats to learn more about humans.
Rats excrete waste in the same manner humans do!
They live with humans.
The Gallbladder. :)
Rats bit humans.
Yes. They are social animals that thrive on interractions with both rats and humans.
the causes of the plague was the fleas on the rats they bit the rats and then when the rats died they moved on to bite the humans
Birds, snakes cats, dogs, other rats, and some humans, all eat rats.
duno a tail
Rats, humans, beavers.
Wild rats and mice are a problem to humans mostly because of disease or rabies but only in wild rats and mice because otherwise they are vaccinated or bred in captivity