Ive also noticed that if they are going to bite you theyll do it before you pick them up... I personally would not use a glove simply because they can smell you... once they learn your scent you shouldnt have much to worry bout... but once you pick them up id say your pretty much in the clear of them biting you... This is no 100% fact or anything just something Ive observed... I have 1 female pastel that hisses like no other but once you get ur hands on her and get her out she calms down real quick... Another thing that may sound silly is to keep your shirt off... I do this a lot with my babies so its much easier for them to pick up on your scent... They flick their little tongues out and can smell you real good. Like franky said they def can tell if your nervous or what not so be confident with yourself... Everytime my female pastel hisses at me I get cautious (can never be too safe) but if you let them get away with it theyll keep doing it... she hisses and i tell er to shut up and i take er out any ways .. pesky lil boogers eh.