Bae was a black long haired chihuahua that I had rescued that was a real clown.  He loved to be on things...this tricycle, a stepping stone on the porch, a box...it didn't matter to him as long as he was on something.  I had finally decided I was going to keep him as I loved him so dearly.  We got him zootered and he passed away.  The vet said that he probably had heart worms and that was what killed him as they got riled up with the chemicals.  We will never know.  This poor baby was a throw-away dog with such a beautiful personality.  I miss him dearly.