How to have intercourse for the first time?

Hey, this is going to sound pretty weird but I need a serious answer. I am a fifteen year old male, almost sixteen. I love animals, primarily wolves, foxes and so on. I have a large stuffed husky named 'Natacha'. I am also a furry. (Side note, I am a furry because I think anthropomorphic animals are awesome, not because they turn me on or anything like that.) I have no sexual attraction towards humans, or towards normal animals. However I get turned on quite a bit by my stuffed husky, Natacha. Because of this, I end up humping her quite often. Usually I dry hump her, sometimes I make a homemade toy and put it between her legs. What I would like to know if this is a normal thing, and also if it is a sin. In my belief, masturbation without any lust, porn, or any of that is fine. But if any lust is involved it becomes sin. But, does that extend to stuffed animals? Also, I've tried doing research on the topic, and it seems like stuffed animal humping is a pretty normal thing. So, is it a particularly peculiar thing, and is it sinful, to have attraction towards, and intercourse with a giant stuffed husky? XD