Mouthy

Tom is quite mouthy.

Source: tatoeba (13177967)

An excellent way to redirect a “mouthy” dog's teeth to an appropriate object. Great exercise and the perfect outlet for family members who want to play roughly.

Source: wiktionary

The separation and isolation will send a clear message to your overly mouthy dog. After a couple of minutes, you can try again. It may take a few repetitions before your dog connects the nipping behavior with losing you, […]

Source: wiktionary

Alison says ‘Open your little mouthy and I’ll give you a pill’. I open my mouth like a baby bird and say ‘Tweet tweet tweet[’]. Incidentally, we are quite ruthless people in other respects, but behind closed doors…

Source: wiktionary