My staffr broke a dew claw a few weeks ago, she just DTFU'd. Wasn a case of her having too much traction playing oout in the snow with the kids that diud hers, light bleeding only.
Re cats & dogs, my brother has a Manchester terrier that gets teased by cats parading in the garden, a few weeks ago the stoopid mutt got so stressed by one cat in particular that the dog had a fit! Resulted in vet sending for an MR scan etc to rule out tumour etc.
Re human nails, the wife has really odd big toe nails, and half ripped one off a few years ago, attended A&E, had a lignocaine ring block to numb the pain, then the medic just pushed it back down.
Last couple of times she's done it I've just pulled whats left of the nail off, and told her to WTFU.
Saline solution will have a mild antispetic effect.