Thats funny. I got an order of 5 crested babies today, and a few minutes after I put them in their cage, I heard a noise. I have an african grey parrot, who was in the other room, who frequently imitates my dog. I heard a barking that was quite faint, and I specifically had to ask my boyfriend if the noise was coming from the parrot, or the gecko, as I have never heard a gecko bark before. Come to find out, it was the gecko. Not sure what its problem was, cause nothing seemed to be bothering him....cute little thing! 8-)