poisonous

adjective [原级]有毒的；会产生毒素的；恶毒的，令人很不愉快的；有许多危害的，恶性的

An animal that is poisonous produces a poison that will kill you or make you ill if the animal bites you. ^{(动物) 产生毒的 •  There are hundreds of poisonous spiders and snakes.}