I'm sure Kai was just being possessive. After all their crate is their home and the place they can go to be safe. Our dogs don't care much who goes into their "homes". Oreo has trapped both Snoopy and Taggert in their when they were trying to steal her food however.

We crate our dogs overnight and during the day when we are not home. Before we got the new pups, Oreo and Dazzi were not crated as often cause they have both been around long enough to know how to not get into trouble. When we got Taggert, we thought we wouldn't get a new crate. Since Oreo was 13, we would just give Taggert hers and she could be free. Well, she was okay with that for about a month and then she reclaimed her "home" and didn't want Taggert using it anymore. So Taggert got a new crate. When we got Snoopy, we did the same thing, thinking we would wait awhile before we got a new crate. But Oreo was taking no chances - within two days, she had announced that was her home and no other pup could have it at night or during the day when we were gone. Crazy pups!!!!