Kudos tot you for fostering an animal.
I am sorry you are going through this tough time - it's never easy having to hear about an animal (Or anything for that matter) crossing over the bridge. I truly can relate, having experienced this unfortunate type of experience on numerous occassions.

I also agree that they should have left his pictures up - kind of as a legacy to him. I'm sure he didn't have an easy life and deserves the accolade.

Hugs my friend and PM me any time.