Hello. I am getting a puppy rat terrier in 10 days. I've already picked him out from the breeder. He's somewhere between a toy and a mini. The breeder says that he'll probably be about 12 lbs (max 14). We definitely want to crate train him, but I'm having the hardest time figuring out which size crate to get! I'm stuck between the 24x18x21 and the 30x21x24. I want it to be the right size when he's full grown, but I have no idea how big that will be in terms of length and height. I also don't want the crate to be too big. I'm looking at the Midwest Life Stages crates, and I'm leaning toward the smaller of the two sizes. Any suggestions?? Anyone out there have a rat terrier in that size range? This is my first rat terrier (actually, my first dog) and I can't wait to get him!! His name will be Murray.

Thanks!

-Joanna