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?
Here's an extract from an article by Ajahn Brahm, What the Buddha Said About Eating Meat,

Towards the end of the Buddha's life, his cousin Devadatta attempted to usurp the leadership of the Order of monks. In order to win support from other monks, Devadatta tried to be more strict than the Buddha and show Him up as indulgent. Devadatta proposed to the Buddha that all the monks should henceforth be vegetarians.The Buddha refused and repeated once again the regulation that he had established years before, that monks and nuns may eat fish or meat as long as it is not from an animal whose meat is specifically forbidden, and as long as they had no reason to believe that the animal was slaughtered specifically for them.
The Vinaya, then, is quite clear on this matter. Monks and nuns may eat meat. Even the Buddha ate meat. Unfortunately, meat eating is often seen by westerners as an indulgence on the part of the monks. Nothing could be further from the truth - I was a strict vegetarian for three years before I became a monk. In my first years as a monk in North-East Thailand, when I bravely faced many a meal of sticky rice and boiled frog (the whole body bones and all), or rubbery snails, red-ant curry or fried grasshoppers - I would have given ANYTHING to be a vegetarian again! On my first Christmas in N.E. Thailand an American came to visit the monastery a week or so before the 25th. It seemed too good to be true, he had a turkey farm and yes, he quickly understood how we lived and promised us a turkey for Christmas. He said that he would choose a nice fat one especially for us... and my heart sank. We cannot accept meat knowing it was killed especially for monks. We refused his offer. So I had to settle for part of the villager's meal - frogs again.
Monks may not exercise choice when it comes to food and that is much harder than being a vegetarian. Nonetheless, we may encourage vegetarianism and if our lay supporters brought only vegetarian food and no meat, well... monks may not complain either!
May you take the hint and be kind to animals.

My understanding therefore is that &quot;frogs&quot; is what the villagers shared, as alms.
Wikipedia's Thai Forest Tradition article talks of a morning alms round (and not of monks catching animals and killing them and cooking their own food).
Other Google search results say things like, &quot;Thai forest tradition monks cannot handle money or cultivate, cook or store ...&quot;, and &quot;The monk does not store or cook food but daily enters the nearby village ...&quot;.