"Has anyone ever observed one animal change into another animal ?"
"Yes . For example , the hawthorn maggot fly was observed to change into the apple maggot fly in only a few years . I also gave the example of the herring gull/lesser black-backed gull that exists as a single , continuous population the circles the globe in which the extremes have become seperate species . Of course , what you are asking is if it has ever been observed that a frog turned into a lion . But that is n't evolution . In fact , a saltation ( that is the word for that silly idea ) would disprove the current theory of evolution . Organisms change only a little from generation to generation . Generally , evolution is a slow process since it happens in populations , not individuals . Evolution is a change in the genetic makeup of the entire population of over generations ."
"ever observed one animal change into another animal ?"
"hawthorn maggot fly observed that a frog turned into a lion ."