Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
This animated French movie includes an example of a terrible and unsustainable method of harvesting frogs for food. The 3 elderly Belleville Sisters live next to a coastal marsh full of frogs. As one of them walks through the marsh we hear frogs calling and see some of them jump out of her way, including some that have survived her previous butchery with missing legs and eyes. She sits down at the edge of the water with a net extended on a pole and throws some explosives into the water. The explosion sends hundreds of frogs up into the air which fall down all around her, filling her net. She goes back home leaving many dead and injured frogs behind. The women cook the frogs in various ways, including using dried tadpoles for dessert. I think this was all supposed to be funny, since the movie is full of caricatures. It's probably meant to be a parody of the idea that the French eat a lot of frogs, and to show how poor the triplets are, but when you think about it, it's really horrific, whether or not you care about frogs, to see someone hunting in this way, then eating them whole!