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.
It is a common symptom. There are various causes. If you have any breathing difficulty or other alarming symptoms in addition to wheezing-and you do not know what to do-then see a doctor immediately. This leaflet discusses the main causes of wheezing. Wheezing is a whistling sound that occurs during breathing when the airways are narrowed.