They are mammals and have whiskers.
It is impossible to know exactly how many species on earth have antennas. All insects have antennas and although only 900,000 have been recorded most scientists believe there could be as many as 5 million species of insects.
they are alike
There's nothing to indicate that neanderthals would have had whiskers. Those species that has branched off the tree of Life a LONG time ago.
they are not
Whiskers on all animals (bunnies and cats included) are in fact thickened hairs with sensory organs in the skin at the base that allow them to be very sensitive 'touch' receptors - in some animals even picking up sound vibrations! In that sense, yes bunny and cat whiskers are alike.
Both have parasitic species.
A. species
Darwin
There are many species of fish that are called "catfish'. The thing that gives them this name is the feelers/whiskers around the fishes mouth. So I guess the answer to your question is. A catfish is a fish that has what appears to be whiskers.
The whiskers of the cat with black whiskers are black.
no they can be but aren't always from the same species