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 high-pitched whistling sound made while breathing. Most commonly wheezing occurs during breathing out (expiration), but it can sometimes be related to breathing in (inspiration).1  Causes.heezing is a high-pitched whistling sound made while breathing. Most commonly wheezing occurs during breathing out (expiration), but it can sometimes be related to breathing in (inspiration). 1  Causes.