Can I feed my rabbit any vegetables and leaves?

It is important to give your rabbit a balanced diet especially with adequate calcium levels. Give quality hay or grass ad lib he can chew and grind to  wear his teeth down, plus a complete dry rabbit food fed in limited amounts (2-3 oz) that he finishes completely without being selective. Leafy greens such  as cabbage, kale, spinach, and other vegetables such as broccoli, carrots, celery can be fed, but try and avoid nutritionally poor vegetables such as  lettuce and cucumber. Fruit can also be fed in small quantities with apples and pears being readily accepted.

I bought two rabbits that I thought were female. It turns out one is male. Can I get them neutered to prevent pregnancy?

Both male and female rabbits can be neutered from approximately 4-5 months of age and we would now recommend this as a routine to prevent behavioural  disorders and medical disorders such as infected wombs or womb cancer which only occasionally develop later on in life.