Tigers love dogs:

Hate to break it to you, but that's pretty obviously not the same dog in the gif vs video.  It's a little bit unclear what's going on, but the video states that the surrogate mother was a jack russell.  That's the adult bitch in the gif (she has large brown patches on both the left and right sides of her body).  There also seems to be a younger dog with no brown on his right side who might be a surrogate sibling?

Yeah, the only thing the video tells us is that tigers love puppies.