I feel bad for the native species. Cane toads are prolific throughout the world, and they've driven many species to near extinction.

At some point you have to decide what your priorities are and start culling. E.g. Australia wants to kill 2 million feral cats over a decade, as there are 30 million of them, and each one kills 3-20 native animals a day. [0] At some point you have to make decisions and decide which is more important. If you could teach crows how to eat cats, Australia would like to have a word.

[0] https://news.vice.com/article/feline-massacre-australia-unve...