That story brought on the tears.
When my brothers dog, Digger, died Boo would not eat his food. He'd sit and look at us like "I'm waiting for Digger".
I also remember when Bruce's cocker, DJ, died Taz would look out the door for him. They had only been living together for less than 2 years.
I don't recall any grieving of anyone (besides myself) when Taz went.