- BITERS
- Bad dogs, at times
- Attack dogs
- Muzzle wearers, one hopes
- Vampires at work
- Flies, fleas et al.
- Muzzled dogs, e.g.
- Black flies, notably
- Incisors, e.g.
- Mosquitos, e.g.
- Nail-__ (tense situations)
- Incisors, for instance
- Bad dogs
- Hungry mosquitoes.
- Mosquitoes.
- Non-barking dogs.
- Dogs of a kind.
- Some dogs
- Man's nonfriends
- Pets feared by postmen
- Dangerous dogs
- Insect pests
- Rats and fleas, among others
- Nail-___ (tense situations)
- Pernicious pets
- Gnats and curs, e.g.
- Mean dogs