They always want what the other one has, even if it's the very same thing.

LOL, They both got a bully stick, but silly Millie wants the one Chester has! (you can see where she dropped hers, right next to him!)

She left hers to go and do this for his:


She wasn't too happy that I wouldn't make him take hers and give her his!


Then she got mad and turned her back on him:


Once he finished his, he was ready to start on hers!