history: My border collie had to be put down due to a neurological disorder that could not be treated. It is so difficult to have a pet pass away_comma_ I really miss him. Aw I understand that_comma_ I have gone through that myself and it's very hard. When did this happen? 
current: Over the summer, he started acting strange so we took him in for testing.
next: Oh no I'm very sorry. What kind of pet? 