Cute dogs!! And maybe, yes? If he's gentle with the guinea pig, then maybe viewed the baby rabbit the same way. Good on you to see it was still alive before it died a long death in a bag hahaha
Our youngest so far has racked up three kills; two birds and groundhog. The last bird he came to the backdoor with just bird feet sticking out of his mouth. Looking proud as could be. We know we have blackbird nests in some of our evergreens, and it was a baby bird, so we think it fell out of the nest and the dog found it. The adult birds dived bombed him for days whenever he got close