4. Top dog for the ‘fraidy-cat (small breed): Chihuahua
A Chihuahua’s bark is bigger than its bite — waaay bigger. Nefarious figures rarely appreciate the loud, imploring, attention-grabbing temper-tantrums they’re capable of. But don’t think for a second that’s their only guard-dog trait. They’re courageous and difficult to intimidate. You can’t expect the same level of physical protection as from a Boxer, but you shouldn’t be surprised if they try, either.
Next Up: Top dog for the sneezer