For the same reason male iguanas get a little nuts whenever their female owners have 'that time of the month' - pheromones.
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1.2.2 normal ball pythons (Cindy, Darwin, Periscope, and dah bebbies)
0.2 rescue chinese water dragons (Yoni and Linga)
0.0.1 Mountain Horned Lizard (Freckles)
1.0 rex rat (Scurvy)
1.0 gerbil (Yerbul)
0.1 mice (Cute Girl Mousy)
0.1 bunny (Spazz)
1.1 betta fishes (Vicious and Killer)
2.2 great danes (Shasta, Odysseus, Merlot, and Watson)
1.0 fat fuzzy mutt (Smokey)
1.1 cats (Thidwick and Turtle)
3.0 horses (Buddy, Sam, and Scout)
1.0 goat (Billy Jack)
0.0.1 chupacabra (it ate our chickens)

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