personally i don't think my bottle kids ever bit me unless i had a bottle. the biting was usually just from them doing that jab movement (like how they bump momma's udder) at my hand and i get a handful of teeth.
there is a petting farm in a town near me and the guy had this pony that would bite him. he'd be standing their andjerk from the pony biting him, then he'd just turn mid-sentence and bite the pony back, then keep on going with his talking. i was shocked. he said he'd tried everything under the sun and this was his last straw. he said he brushed his teeth alot ;D