Unfortunately, as the catman tried to escape the barking Friesian unicorn, the tree that the fat catman climbed on has a mind of her own. That same tree decides to punch him down, leaving the poor human at the scant mercy of the furious dog-unicorn that mauled away.
After all, the tree is fed up of humans tormenting her, breaking her branches and carving on her bark, so she enjoyed watching the catman scream as he struggled to push the Friesian unicorn away.