These are my favorites.
Bird Using Smart Phone
Cat Snapchat Filter
I’ve found interesting results from people using Snapchat filters. Although this is not strictly a mirror test, I think we can learn a lot from them. The cats in these videos clearly realize that the human is reflected on the screen, but do they know they are as well? This shows that they understand mirrors, but it doesn’t explicitly show that they are aware of their existence. It’s so close though… they are aware that they are being held by their owner who is reflected in the mirror, holding a cat. Therefore… they are that cat, right? It feels so close to a “yes” but I still wish we could do one more test. I wish there were filters for the cats that distorted them. If they reacted the same way that would be that one last piece of evidence. I feel obligated to note that I found these on the Internet and have done 0 investigation into their veracity, so beware these may be fake.