Cigarick,
I would believe the theory of evolution to be the correct explanation for the world in which we live if there were ample evidence in support thereof.
The comparison between my house cat and the lioness was not the correct way to say it, so I will state the argument in another way:
A scientist examines fossilized bones found in a rock seam uncovered by a construction crew several feet below grade and decides they resemble those of the lioness and, to a lesser degree, those of my house cat. The scientist then declares that both the lioness and my house cat are both decended - evolved - from the Great Cat unearthed by the road crew.
Fossilized bones of other creatures are located in similar ways throughout the world and other scientists make similar observations and then declare that present day animals are decended - evolved - from the Great Animals whose fossils have been assembled into skeletons and displayed in museums.
No one questions the scientists. They must be right, mustn't they?
The point is that there are other explanations, besides evolution, for the similarity of present-day flora and fauna to that of times past:
[1] The Little Demon Theory
The Little Demon Theory holds that little demons created the fossils in their hidden laboratories and, having the ability to pass through solid rock with ease, placed the fossils where people would find them and believe that they died and were entombed there.
[2] The Seed of Aliens Theory
The Seed of Aliens Theory holds that the earth was originally populated by creatures now extinct and that aliens from GXYLIUNZ-AG decided long ago to use earth as a petri dish. All other creatures which could threaten the experiment were sterilized off the planet for the sake of science. Rumors persist that the alien scientists are disapointed with mankind because he is far too passive, that the instinct for total war sought by the aliens is not emerging as planned, and that the experiment may be terminated in favor of mosquitoes.
Examples one and two probably seem laughable to those of you convinced that evolution is the only answer while the idea of evolution seems comical to those of us who believe in a creator God.