Apart from humans, are the other species', which are predators to their prey?

Question

Eg. Animal a eats animal b, but animal b could also eat a

Answer 1

You mean like how, for example, humans will kill sharks to eat them, but a shark can also kill a human to eat it?

I know that happens in insects and fish, but only when one species is a juvenile. So an adult of species A could prey upon the larvae or young fish of species B, but when species B is full grown it is a predator of A.

Many prey species also have the capacity to kill their predators in self defense, but they would not eat them. For instance, a giraffe or an elephant could potentially kill a lion that is attacking it (one strong kick could do it), but obviously they wouldn't eat the lion because they're herbivores.

I think if you're looking for a case where adults of both species are predators of each other, you won't find one. Predators evolve to hunt for prey that they are most effective at catching, with minimal risk to themselves. To prey upon something that could just as easily be preying upon you would not be an adaptive behavior, and would rapidly be eliminated from the population.

Good question though, I had to think hard about that one!

Answer 2

Ok. First off, the word is species, not "species' " Secondly, every predator is "predator to their prey". I think you mean "Are there any species that are preyed on by their prey." or such. There are many types. chickens, snakes, etc eat eachother often. Otherwise, you might be thinking "I wonder if perhaps a bear would eat a wolf and a wolf woud eat a bear.". Such things happen but only if the predator is very sick, crazed or just extremely desperate.

Answer 3

most predators can be eaten by their own kind
almost all carnivorous animals are cannibals
pigs will eat pigs
chicken will eat chickens
dogs will eat dogs
crocodile will eat crocodiles
lions will eat lions bears will eat bears
and many more .

in most cases the old will eat the young or the dead .

so your reasoning works with almost all predators and even animals not considered predators ,like chickens of pigs

although i have seen a pig kill a chicken on various occasions

the event depending on the condition of the prey such as sick or dying or dead,or an enemy ,or very young

people are the only ones who will eat people for symbolic or religious reasons

Answer 4

huh? I think you need to get hold of a dictionary and look up the word 'predator'!

Answer 5

I had a cat once that killed it litter of kittens

Answer 6

alligators and turtles are the first that comes to my mind, but I'm sure there's more.