He is at first employed to slay wild boars which threaten humans, sheep and cattle of the Scottish countryside.

When a bear becomes food conditioned, habituated to humans, and threatens or attacks humans, it becomes a threat that society often won't tolerate.

Scientists are unsure what brought on the virus, which does not threaten humans, and they say there is nothing they can do to stop it.

Unlike mad cow disease - bovine spongiform encephalopathy - it is not thought to threaten humans.

The only exceptions to the law are in cases of lions that actually threaten or attack humans or livestock.

Dr. Ulrich interprets this to mean that people are biologically predisposed to strong emotional responses to animals that have threatened humans throughout their evolution.

There are few recorded cases of wild orcas threatening humans; none have been known to be fatal.

State health officials, who have a $1 million annual budget to fight all animal diseases that threaten humans, are shifting personnel and resources to South Texas.

Pollution threatens not only humans, but also more than 140 fish species, 90 amphibian species and the endangered Ganges river dolphin.

It is a power that turns even friends and lovers into mortal foes, one that will threaten humans and fairies alike.