Your rabbits are not raping each other...even though they look gay when they humping each other, they are just showing who's the boss in the house. They hump because rabbits can't actually fight with each other, like how humans do. So they show their strength by humping.

Most animals including rabbits will fight/hump to decide one leader of the pack. btw the correct term is to neuter your rabbit, castrate sounds very wrong 

If you no money, then just drop the idea. It's not cheap to neuter one rabbit, and you gonna neuter all 3 some more. If you want, save some money first la. btw how old is your rabbit?

You can put together your rabbits during playtime and see, but during sleep/eat time you can put them in separate cages so they wont hump or fight. Once they decided who's the boss already, they will slowly stop it...

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Added on November 6, 2010, 12:47 pm

Try Jjay petstation at Kota Damansara, Petshack at Sunway Area, or PLC at Klang Bukit Tinggi/Sunway Pyramid.

U shld line the cage cos the wire bottom hurts the rabbit's feet. Dun have to use floor mat, there is a special mat for it, u can buy at most pet shops. It has holes big enough to let poop go thru.