They're Small But Tough

They may look like little more than glorified rats, but if you rile them up, chihuahuas can be tough little suckers:

A pack of angry Chihuahuas attacked a police officer who was escorting a teenager home following a traffic stop, authorities said. The officer suffered minor injuries including bites to his ankle on Thursday when the five Chihuahuas escaped the 17-year-old boy's home and rushed the officer in the doorway, said Fremont detective Bill Veteran.

Perhaps some Kevlar socks will be in order.