Do any other animals (besides humans) lose the ability to grow hair as a result of age ?

Good question!

I think in our evolved stage, humans are the only ones who have hair for purely aesthetic purposes, unlike some other animals who may need hair on their bodies as per the demands of their enviornment. So nature has made them that way, where they may not 'completely' lose the ability to grow hair, but surely the quality of hair on them decline.

We can notice it on our pets - dogs, cats, etc.

(star for you)

Gorillas' backs turn silver as they age. this is totally basic to work out white hairs around elderly canine' muzzles; black cats turn brownish. that are the few examples i will bear in mind now.

I know hamsters will frequently lose patches of hair when aging, and it doesn't grow back...but we are talking pretty much at the end of their lives.

Not sure about other animals, sorry.

I believe chimps do. If you look at elderly chimps, they are often bald or close to it. Some dogs do too. They don't go bald but their fur does thin out.

thats a good question! i actually don't know but that would be an interesting topic to research!

i do know that some dogs get gray hair on their snouts though, like golden retrievers

Our can seemed to loose a lot of fur, but she was ill.

I think that the chimp does.