**Are you really saying that a 3 1/2 foot female is a danger to a male thats almost 6 feet?**
Exactly!!!!!!!! Only I don't have any 6ft cal kings. Generally the males are ready to breed during the spring time and aren't in the killing mode. I have had lots of females that weren't ready to breed and the female DOES ATTACK THE MALE no matter what the size difference is. I've never had a male attack a female.
**When you put 2 constrictors together, if there is going to be a problem the smaller snake is almost garanteed to come out on the worse end of things. Thats why if you take the larger snake a little bit out of its comfort zone by putting into the smaller snakes cage you reduce risk. Unfortunately though, the bigger snake usually has the bigger cage and so people tend to do the reverse.**
That is why we are talking about cal kings and not "constrictors". Lots of snakes are constrictors that aren't cannibalistic. Size is irrelevant in cal kings. It's more of a female vs male thing, not size.
**So picture this: You raise a snake for 3 or 4 or even 5 years, and during that time the only thing that comes through the door of the cage is your hand or food. Then one day a smaller snake is thrown inside. Most snakes get the picture, instinct takes over and they breed, but some are still in feeding mode and will attack.**
I can picture that because that is what I do. I understand about condition/response reflex. When I breed my cal kings I wait until the female sheds and I keep her shed in her cage. I let the male cal king crawl into the female's cage, smelling the shed first. The male is always wanting to breed, not feed. If the female is ready then they breed, if not, then trouble can occur quickly. It is the female that decides when to breed, not the male.
**I have only had this problem 3 times with kingsnakes and each time it was with a virgin pair and the male was the one that attacked. Now, 3 times is not a lot to base conclusions on, and the males were all significantly larger and the female was placed in their cage so the situation was stacked in the males favor.**
I've had 18 month old females and 10 year old females attack males. Size and age does not matter.
**Aslo, in the wild a male king would leave his territory during breeding season and seek out females, so it is natural to move the male.**
Agreed!
I always introduce the male to the female.
**And your right about overnight being the true test of time. But if they have been fine all day the chances of a fight in the middle of the night is small. Hell its small anyway.**
Agree, that the risk is smaller the longer they are together, but I choose never to leave them overnight together. I am always breeding certain males to certain females and I cannot risk or replace some of my breeders. So the risk to me is unquestioned. There have been lots of documentation of females eating the males after breeding.
I'm not trying to start an argument. There is more than one way/method to breeding cal kings. Do what works for you.

Kerby...