(simile) like cats and dogs, not get along, fight all the time

(idiomatic) curled up

(literally) between a dog and a wolf / (by extension, idiomatic) at dusk, at twilight; gloaming / (photography) golden hour (used in same technical sense for “good photographic light at twilight”)

(slang, of a man) junkyard dog

a disobedient animal or a person

(very rare) an aggressive person will inevitably get themselves hurt

barking dogs seldom bite, one's bark is worse than one's bite, all talk no bite

(of the weather) awful, dreadful

(simile) very suddenly and incongruously

(Louisiana, Cajun, idiomatic) darn