Ajahn Brahm stated that he ate snakes and frogs during his training, does this mean that it is acceptable to kill animals?

It is famous solution to eat meat only if it is offered by somebody and when the animal was not killed specifically for the person receiving it. Amongst the many videos of Ajahn Brahm on his youtube channel, he stated, in at least one, that during his training in thailand, he spend a few days or weeks, with other monks, in the forest and he boiled frogs and ate snakes. He added that this training was quite though, with the meals not pleasing. Do we know more about the thai tradition when the monks go in the forest and eat there, in particular to know whether it is acceptable to kill animals, ourselves, directly for our personal consumption?