These qualities, combined with a powerful set of vocal cords, make the Chihuahua
a natural watchdog who will never fail to alert the family to anyone who darkens the door.
(He is
a natural watchdog, after all.)
They're
natural watchdogs.
A natural watchdog that doesn't like other dogs in its territory.
They are
natural watchdogs but not overly dominant.
A natural watchdog, Dalmatians are reserved with strangers and don't like other dogs in their territory.