You know, people who are saying that Spike being a dog demeans his character, I think I can prove you wrong.
If there is one thing I noted in the trailer, it's that Twilight does not understand how a human functions. (Come on, the way she ate an apple as a human, I'm sure that's saying something to you.) What's more, she has used magic most of her life and probably doesn't know how to function without it. In a sense, she is disabled.
So what does this have to do with Spike being a dog? Well, answer this...
What animal is the #1 companion for those that are disabled? Yep, a dog.
You cannot deny how much dogs have helped those who are disabled, and you know this goes FAR beyond those that are blind.
Him being a dog is to NOT look at him as a pet, but as the other thing a dog is to humans. A loyal and helpful companion. So, if they play Spike like that, it'll show that they are matching his character in this way.
He has ALWAYS been a loyal and helpful companion to Twilight, and him being a dog is what matches him in this case.
