Guard duty is assigned in pairs

Lucy and Bunya guard their gate

Lucy is the most alert bunny. Bunya tends to nap while she's on guard. Unless there is treat potential.
Then it's every bunny for him/herself.

If Lucy could draw a little cartoon "thought bubble" for herself above her head, she is thinking ...

The "I'll watch your back - you watch mine" on-guard position

Hmmm, maybe Bunya sleeps no matter who else is on guard duty.
Great ... we've got the Beetle Bailey of bunnies.