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, I really miss him.
user
Aw I understand that, I have gone through that myself and it's very hard. When did this happen? 
assistant
Over the summer, he started acting strange so we took him in for testing.
user
Oh no I'm very sorry. What kind of pet? 
assistant
A border collie, he was a great doggie.
user