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.
A person with scarring of the lungs may develop wheezing. This phenomenon is a rattle-like sound in the lungs upon exhaling or during physical activity. As scar tissue worsens, the sound can grow louder and occur with more frequency as even the simplest of activities, such as getting out of bed, becomes too strenuous.