The introduction of cane toads was an ecological disaster.
In 1935, humans introduced the cane toad to Australia to help eradicate the cane beetles that were eating all of the sugar cane crops. The plan backfired. Cane toads increased in numbers and territory, killing predators and depleting food sources for native species.
Mangoes in South India were referred to as aam-kaay in Tamil, which became maam-kaay as a result of the numerous regional dialects there.