Two things occurred to me when I watched this.
1. OMG, isn’t that beautiful, aren’t animals amazing, doesn’t love and kinship just conquer all.
2. I’ll bet if we ever released Nano into the wilds of his Mexican homeland to run unfettered and free with his herd? pack? quiver? of Chihuahuan brethren (there should be a distinct collective noun for a group of tiny nervous dogs), he’d totally recognize us always.
Only I hope he doesn’t get that big.