dog's age

noun

Northern U.S.

1. quite a long time.

   I haven't seen you in a dog's age!

Word History and Origins

Origin of dog's age¹

An Americanism dating back to 1830–40

Idioms and Phrases

see under coon's age.

Example Sentences

They are also digging into whether AI could correctly identify a dog's age, gender and breed based on what it woofs.

From BBC

Bobi's owner, Leonel Costa, has not commented on the record's removal, but had previously said suspicions over the veracity of the dog's age were "unfounded".

From BBC

Participants responded to questions about the types of screens in their homes, how their dogs interacted with screens, the kinds of content their dogs interacted with the most, as well as information about their dog's age, sex, breed and where they live.

From Science Daily

The group said it had received correspondence from some vets questioning the dog’s age and took note of public commentary from vets and other professionals.

From Seattle Times

A dog’s age and sex were often far better predictors of its behavior, and for some traits — most notably aggression — breed made no difference at all.

From Los Angeles Times