Will they put a very old sick dog or cat to sleep?

I think they would refer u somewhere elsr, but I'm not 100% sure. U should try calling them to make sure. U can also call Angell Memorial Animal Hospital. They also do discounted animal care if Merwins cannot with that. Good luck & I'm very sorry...

No they will bot do it there

No they will not, they will refer you to Angel Memorial in Jamaica Plain

They will assess/triage & refer you to a full service veterinary hospital, as they are only an acute care clinic.