Today I noticed that Jet's dew claws and one of his front paw nails seemed to be damaged. They look like they've shrivelled up (for want of a better description) or that the nail has come off? it's kind of gone really thin and white?

I wondered if anyone elses dog had suffered this and if it was a serious thing? He does not appear in any pain because of it but to happen to all three at roughly the same time seems strange, we've had no nail issues before (except that he pulled one out about 2 weeks ago but that's healing now).

I thought i'd ask here first as Jet is petrified of the vet and they said (when they looked at the torn out nail) that to look proerly he'd need sedated which i'm reluctant to do unless it's really necessary.

Any thoughts?