I'm with responsiblek9 on this one. I have seen people try to make this argument for autism service dogs. "The dog's natural instinct is to move away from distress, so by virtue of the fact that the dog remains with the distressed, autistic child, that is a task." Animals are naturally in tune with their owner's emotions. Their tendency is not to move away, it's to move towards. My cat crawls into my lap when I'm upset, anxious or sad (or just when he's demanding snuggles), but just because he's in tune with my emotional state, does not make him a service animal. Additionally, when he does crawl into my lap when I'm upset, I give him lots of petting and love, which reinforces his behavior. This argument is better for dogs because they work better with reinforcement while cats typically march to the beat of their own drum, but just the same.