Temperament is a combination of genes and environment.

An interesting fact that most people don't realize: there is a biiiiiiiiiiig molecule, call proopiomelanocorticotropin, which ends up being involved in the pathways to create pigment molecules AS WELL AS molecules which affect behavior in several different ways. Therefore, it should not surprise anyone if animals with different colors also behave differently -- the pathways are related.

We even accept some of these differences in human stereotypes -- ditzy blondes, firey redheads, and so on. Of course the corollation is not exact, since the pathways are very complex and since there are many things that influence behavior. But there is good science behind the connection!
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1.2 Peruvian rainbow boas (Amaru, Asiru, Kulipsa)
2.0 Brazilian rainbow boas (Arco, Olho)
1.3.1 Honduran milksnakes (Chicchan, Chanir, Chakar, Hari, Saksak)
1.0 Thayeri kingsnake (Coatl)
0.0.1 Mexican black kingsnake (Mora)
2.4.4 corns (Cetto, Tolosa, Uce, TBA)
1,000,000.1,000,000 other critters

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• Temperament and breeding - Sonya, Wed Sep 22 14:07:04 2010
• RE: Temperament and breeding - KevinM, Thu Sep 23 10:49:03 2010
• RE: Temperament and breeding - amazondoc, Sat Sep 25 10:46:09 2010
• RE: Temperament and breeding - amazondoc, Sat Sep 25 10:48:11 2010
• RE: Temperament and breeding - KevinM, Sat Sep 25 13:42:55 2010
• RE: Temperament and breeding - curaniel, Sun Sep 26 12:48:42 2010
• Ahh!! okay! - DMong, Tue Sep 28 21:30:43 2010
• RE: Temperament and breeding - markg, Mon Oct 18 19:14:46 2010