That's BS IMHO.
No offense of course. But I believe its BS when it comes to the common pet species of snake. Talking BP'S, corns kings, etc.
I am doing a survey on this right now. Almost 500 people have replied and taken the survey to give their input and see if in cage feeders have beeen bitten more.
I believe if you are practicing proper husbandry it makes no difference where you feed.
For one lets say you open cage once per week for feeding in cage.
You open once per week for water change/spot cleaning
maybe once per week for a full cleaning
say once or twice for handling
That's 4-6 times per week your hand is going in the cage. And out of ONE time the snake thinks from then on its food time? Not IMHO. Not only do I believe its malarky, but I think feeding bite accidents happen FAR more when removing them to a feeding tub. And so far the results from my non-professional personal survey are agreeing with this.
Also if snakes are THAT conditionable that one time per week out of 5 will make them think each time is feeding time then why would taking them out of cage make any differance? If we go by the logic above, then snakes would be as likely to bite when taken out to be fed then when fed in cage. It wouldn't make sense any other way. If they bite when a hand is in cage or lid is opened and that makes them think food because they got it there last time, then feeding ut of the tub is the exact same thing. How many people use a different shape/size color tub each time? Not many. So each time the snake is removed and in the tub the exact same conditioning would happen if the logic is true. I believe its not.
I also feel that people may mistake out of cage feeding calm snakes for snakes that just get more handling. You automatically handle a snake TWICE more than you would if you fed them in cage. That alone takes some getting used to for the snake, giving the appearance of a "friendlier" snake. Although I this is a minor point and just a guess.
All my snakes have been fed in cage their entire lives. Only one bites people and that's a whole different issue. I have yet to be bitten by my corns (fed in cage entire lives, one not ever handled) or my BP who is also fed in cage. I also fed my California Kingsnake IN cage and he is the biggest baby in the world.
This is all IMHO from my thoughts, the little experience I have, and the results/conversations fro people who contacted me about the survey and other large breeders who also have mentioned not having time to fed out of cage but having no aggresion problems.
Marisa