.BIOLOGICAL WEATHER FORECASTING MODELSInvention of Bio-forecast was invented by in 1965 that can easily perform in minutes at no cost and forecast weather changes&natural calamities 18 days in advance. This is an easiest and interesting forecasting method.I designed it based on the similar principles such as how creatures sense weather changes&natural calamities in advance. This research was successfully completed. It's derived from the basic principles of natural preparedness of animals after many researches&studies, conducted by me on the issue that has been established that animals like fish, birds, reptiles, insects, dogs, cats, cows, bears, sharks etc can predict weather changes&natural