Some rabbits learn to use a cat flap if it is a light one. NEVER stuff a reluctant rabbit through it – that will put them off for life. Try holding the cat flap open using a wooden clothes peg. Slowly lower the flap, making it only half open, over several weeks so that rabbit has to push with its head to open it. Never let a rabbit out unsupervised into an unprotected garden if there is a chance of foxes, cats or even birds of prey – see above.