As reported in Ananova:
Melanie, 29, from Aberdeen, said: "It's amazing to see. For some reason they just took to the rabbit instantly and thought she was their mum.
"They started climbing all over her and were looking to get milk from her. She just sat there and let them do it.
"Now they follow her everywhere. They can't bear to be without her. They're all so lovely together."
Check out video of Summer and the kittens from STV.