The actual purpose of DMT is unknown, but N,N-DMT levels in the blood increase during REM sleep, brain death, and 49 days into the development of a fetus.
if there is no plants humans cant get oxygen so naturally people cant exist on earth
Yes, animals can get cancer just like humans can.
There have been reports of homosexual acts in animals, not just humans. In one specie of lizards, only females exist, so they have no choice.
Yes but they cannot live with out us either
Rabies can infect humans if the human is bitten by a rabid animal. --It infects humans, but it does NOT effect them the same way it effects animals. Not an answer to the question.
Humans couldn't survive on earth if there aren't any animals, because humans cannot live purely on a vegetarian diet. Plus, if there were no animals, most plant species might die off because animals help most plants grow and pollinate and such.
Our world has become a planet of animals! if we are animals then none of us would exist! Because simply we are animals as well!!!we wouldent exsist.
Not naturally,but yes they do exist.
Humans
Yes, dogs do exist. They are one of the most popular and beloved domesticated animals, kept as pets and working animals by humans worldwide.
their populations would grow and grow and finnally take over
Vampires don't exist. But in the movies, no, they just drink blood and eat humans/animals, not vegetables too.