i had a lurcher dog once when i was 14 that my father brought in for me, he would catch rabbits farely well on the lamp. he always caught the first rabbit and run down to the far end of the field from me and ate the head, every rabbit after that he would be fine with. i could never brake him of that habbit no matter what i tried but i was just a young lad then.
good luck with your dog hopefully you can sort the problem
atb trigger.