Crayfish and amphibians are vanishing as a stealth invader spreads statewide, raising alarms about cascading losses across fragile wetland ecosystems.
A Florida man was hailed as a hero for catching an 8-foot-long invasive python, and then fined for it. Where is it legal to kill them?
From river giants to land-dwelling beasts, these are the biggest creatures walking, swimming and flying across our planet ...