Understanding Biological Fitness Practice Test

A dog who cannot give birth due to a hip abnormality, but is healthy in all other respects

A prairie dog that, though smaller than the average member of her species, has twice as many healthy young in each litter

A turtle that lays hundreds of eggs each nesting season, although an unusually small number of these eggs hatch successfully

A sterile mule that can pull over 800 pounds

A childless human male who lives to be over one hundred years old