Pair Bonding in Chameleons

Pair bonding in chameleons was first reported by Toxopeus, L.J. (1988). Pair Bonding in Chameleons. Naturwissenschaften 75: 307–308.

Field observations in Kenya revealed that certain species can form long-term social bonds:

• Chamaeleo jacksonii pairs remained together for at least 63 days, even persisting through pregnancy.

• Ch. hoehnelii pairs were bonded for up to 85 days, with one case continuing after pregnancy.

• Ch. bitaeniatus showed only short-term associations with frequent partner changes.

• Ch. dilepis was solitary, with no evidence of pair bonding.

This was the first published evidence of long-term social affiliation in reptiles. The findings challenged the assumption that reptile social behavior is restricted to brief courtship or territorial interactions and highlighted species-specific differences in social strategies.

A picture Courtesy of Laura & Bobby Bok, www.herpsafari.nl shows the behavior described in Trioceros jacksonii from Kenya, and a picture of Petr Necas of Brookesia superciliaris from Andasibe, Madagascar shows the same.