re: When do you know it’s time to put a pet down?

I lost my 18-year-old Rat Terrier, Jacky, two weeks ago. She had entered that cycle of good day, bad day but seemed to be hanging on. Her vet was watching her health closely and was advising me about when the end was coming. My loving little pet had a seizure in the middle of the night and passed on, sparing me the heartache of having to decide when to take the necessary step of euthanasia.

Be strong. It's super tough to part with them but their love is well worth having them. No length of time seems long enough.