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.
Wheezing is a whistling sound that occurs during breathing when the airways are narrowed. Commonly the sound is more prominent when you breathe out than when you breathe in (although not always). The sound is caused by air that is forced through airways that are narrower than normal.