Many residents of southern and central Florida do not realize they may have an invasive species right in their own backyard. The cane toad is a native of Central and South America and was introduced to Florida as a means to control white grubs in cane fields.
1 Breathing difficulties: Shortness of breath, wheezing or noisy breathing (called stridor) may all be signs of lung cancer.  Loss of appetite: Many cancers cause changes in appetite, which may lead to unintended weight loss.
Asthma and Reactive Airway Disease (RAD) (Wheezing) Tweet. Asthma and Reactive Airway Disease (RAD) are conditions in which the airways (bronchi) in the lungs overreact to certain things. Understanding what the lungs look like and how they work will help you understand asthma or RAD episodes and how to control them.