The Home Improvement Plan

So Charlie, who is four years old, thinks that the recent siding put on the house does not go far enough in improving our house. He proposes, for our wee little front yard, that we acquire some large animals. Specifically, he's pushing for us to obtain a yak, a musk ox, a buffalo, and a bison ("Aren't a buffalo and a bison the same thing, Charlie?" "No! You're just joking, right Dad?")
ME: How are we going to get these animals?
HIM: We'll have to go to Montana. We will drive to Montana and get them there.
ME: We only have, like, a station wagon. How are we going to get them back home?
HIM: They can be on skateboards.
ME: Can yaks ride skateboards?
HIM: No, we'll drag them behind the car. We'll need some ropes.
ME: That sounds dangerous.
HIM: We'll get them some helmets. We'll get REALLY big helmets for the yak, the musk ox, the buffalo, and the bison.
ME: What about the horns?
HIM: Mom will cut holes in the helmets for the animals to put their horns through.
ME: Well. Okay. Sounds like we're all set then.