Are teranchulas venimis

Answer 1

Do you mean Venomous? And it depends greatly on the species. Some species, while not known to have ever produced human fatalities, have venom that can produce extreme discomfort over a period of several days. While others are absolutely harmless, to people anyway.

http://en.wikipedia.org/wiki/Tarantula

Answer 2

Yes, tarantulas are venomous. They use their venom to subdue their prey, which typically consists of insects. However, their venom is not considered dangerous to humans and is usually no more harmful than a bee sting.