Ok this may sound crazy but can snakes sense different hormones?
My Mrs is pregnant, my royal has been on fast for the past few months and won't even strike. I was holding him just now and she walked by and he struck towards her hand! He's never struck at anyone! Seems very strange and the only explination I can think of is maybe he can sense the hormones
i would say they probably can sense hormones iguana's can and are known to get arsey/aggressive towards women during that of the month and snake's have a more acute sense of smell/taste
1.0.0 burmese python,giblet. 1.0.0 BCI, william. 0.1.0 blue tongue skink, 0.1.0 green iguana, jasmin, 1.0.0 cape house snake, 0.1.0 checkered garter snake
Their sense of smell is extremely sensitive but I doubt this was pregnancy related. Move to quickly towards a Royals head and it's heat pits pick up the heat heading straight for them and they nearly always respond. Strike or recoil in horror, I've had both.