WWE Superstar Daniel Bryan -- My Adorable Dog is Dead

WWE superstar Daniel Bryan's dog died last week ... and the wrestler says he's having a tough time dealing with the loss.

The bearded athlete revealed the tragic news during an interview promoting WWE's Survivor Series pay per view on Sunday ... and said Asparagus the Wonder Dog was his legitimate "best friend."

It's unclear how Asparagus passed away ... but the yellow lab was 11 years old.

A.T.W.D. is survived by an equally cute pooch named Josie.