Gecko aggression ??!

[Pringle<3]

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I got my lil Pringle 4 days ago. His previous owner got him very used to handling so I was thinking I could start at the one week mark instead of the second. He’s also an adult crestie. I thought the process of getting him settled in was going very smoothly, he started eating on the second day! However the other day when I was trailing my finger across the glass enclosure and put it in front of his face he lunged at it through the glass! Does this mean he’s stressed out?

[GeckoLeen]

More likely he has a strong prey drive, and thought your finger was a big worm.

[Gecklover]

Congratulations! I would not worry too much, this happened to me after I fed my little one a couple of wax worms, she absolutely LOVE those but have to be very conservative on how often she eats them to not spoil her usual appetite of Pangea complete mix, mainly just a treat. Every since I gave her live food I have experienced her being more prey driven, she is an active huntress and sometimes she thinks my finger is a big worm, just don't panic and fling him if he does bite, at most you'll feel a bit of pressure. I have also experienced geckos bonding with a specific person so let him also get used to you and you should be alright! Keep an eye out on what substrate you use to avoid impaction if you have a munchie cresti as well. Take it one day at a time

[Aimless]

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I would definitely refrain from touching the glass. that's like tapping on the glass at the zoo, it's stressful and/or creates a prey response, and you don't want your gecko to associate either thing with you.