Loose in the house together with a bone each, Chico and Bonney will trade them back and forth, always wanting what they don’t have, even arguing about it.

Closed in their crates with a bone, they don’t chew the bones, they forlornly look at me, clearly expecting to be left out of something fun.

But each will stay in an open crate and chew her or his ‘assigned’ bone without bothering the other. At least, they did this evening.