Open Question: Rabbit in heat...or just friendly?

[feedcrawler]

We have a one year old buck lion head rabbit. He recently gained a foot/leg fetish. He circles our feet as we walk and if we stop he climbs up, places his front paws around our legs, and occasionally starts to shake. He also nibbles at our feet when he never used to. We love him and enjoy letting him out of his cage but are now scared. We let him out and then run to put our legs up out of his reach. Can someone please clarify if he is just overly friendly or in heat. And if he is in heat could you give me information on how often this will happen and is there something we can do to stop it?

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