should he be neutered? Why does he bite me?

i have just bought an adorable baby (9 week) bunny who was handled every day before i bought him and the first cople of days he was very friendly and loved being cuddled etc, now if i pick him up or put him in my lap he scrabbles, digs and bites me. he loves to be petted on the floor and has full run of the house and binkies occasionally. Why has he turned against me? Should i get him neutered?

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