Am I a cat or a dog?

Meet Tifa, a "species confused" cat who pants, wags her tail, smiles, and play "fetch" - things that are naturally evident to dogs. Not only does she fetches the toys, she also drops them. 

As you can see, she pants like a dog. And because of this excessive panting, she went to several tests but the vet saw nothing wrong with her. She pants when she runs and plays too long. This video however was taken when she was 6 months old. She's a year old now and doesn't pant anymore.

Now that's a dog. I mean cat!