"Components of bufotoxin are toxic to many animals; even human deaths have been recorded due to the consumption of cane toads."


but...

"...Opossums of the genus Didelphis likely can eat cane toads with impunity. Meat ants are unaffected by the cane toads' toxins, so are able to kill them. The cane toad's normal response to attack is to stand still and let its toxin kill the attacker, which allows the ants to attack and eat the toad."



https://en.wikipedia.org/wiki/Cane_toad