This draft confuses the usual, explicit definition of functions with algorithmic definitions. For example, the function on the real plane that takes (a,b) and returns 1 when a< b or returns 0 otherwise, where < is a well-ordering on the reals given by the axiom of choice, is certainly not algorithmic.
An average full-grown male Labrador Retriever weighs anywhere between 65 and 80 lbs. Males are characteristically larger than females, though are just as prone to becoming overweight. The average female Labrador Retriever can weigh from 55 to 70 lbs, depending on bone structure and diet.
As mentioned earlier, a typical healthy weight for an adult male Labrador Retriever is around 70-80 pounds and around 60-70 pounds for an adult female. If your Labrador Retriever tips the scales at 100 pounds, it would be considered officially obese and would benefit greatly from a weight loss regimen.