I might argue that one will find no significant difference in mom raised and bottle raised babies as far as personalities go, but I have to say this last baby I bottle raised (mom's milk never came in) is sticky sweet and loving - still purrs as soon as I look at her at eight months old and loves to be held and loved on. However, both parents are incredibly friendly as well so I can't necessarily attribute her socialization to being bottle raised. At about five months of age she finally figured out the art of suckling so she does like to suck on me at times. Is this a behavioral problem? I suppose some may say so, but I have had many, many mom raised babies who do the same, so definitely not a behavior limited to bottle raised babies.