My two baby tincs at work climb the glass on their tank all the time. It provides hours of entertainment for me and my co-workers and I sometimes wondered if they were unhapppy too. But they eat like they were starved the day before and are active and out all day and getting fat so I can't complain. I think it's just one more thing for them to play on and dirty up (typical kids!!). My adult tincs at home climb the glass occassionally but not nearly as much as the ones here at work. But then again, they have a 20 gallon long between the three of them with broms that they use as a swimming pool and the leaves as a diving board.
Chantel

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Chantel a.k.a. sillygirl
"I came, I saw, I adopted"
2.2 green anoles (Stumpy (M)), and the rest remain nameless.
1.1 green tree frogs (Romeo & Juliet)
1.2 Firebelly toads
0.0.5 D. tinctorius (Cobalt froglets)
0.1 Anerythristic 'B' (Charcoal)corn snake (Popcorn)
0.1 Snow Corn (KandyKorn)
0.2 Amel Corns (KornSilk & KornMuffin)
0.1 Normal Corn (PepperKorn)
1.0 Creamsicle Corn (Kream)
0.0.1 Giant African Millipede
2.4 Domestic house cats (Bad Boy (m), Bart(m),Sasha(F),Little Bit(F),Spirit(F)
1.0 Rottweiler (Jake)
2.5 Rats (Mouse, Socks, Silver, Squishy, Fox, Lucky and B**CH)
1.3 Mice (My step-daughter seems to think they are pets)
2.0 Betta (Sushi, Blue)
1.0 Husband (David, who loves all my critters too)