This isn’t actually a rabbit at all. A rabbit, as we all know, is furry, has long floppy ears and hops. A Da-Hah-Winian rabbit is furry, but walks on all fours and has quite small pointy ears. It never, as far as anyone has ever observed, hops.
Native to the planet Kimkadia, Da-Hah-Winian rabbits are actually called Blijars on Kimkadia. Adopted quickly as pets by early Earth visitors to Kimkadia, some were brought back to Earth and became very popular with children. However, the name Blijars didn’t knock the socks off marketing companies who came up with the name ‘Da-Hah-Winian Rabbit’ because:
a) Kimkadians learning Earth language tended to call everything that wasn’t human or a Kimkadian a rabbit because rabbits were pets that the first astronauts landing on Kimkadia had with them
b) The very first ‘contact’ Kimkadia had with Earth was via a ‘greetings capsule’ that had entered the Kimkadian atmosphere in the early 22nd Century. That contained a slightly corrupted aircast that referred to Darwinian theory, but unfortunately gave the impression that Darwin was God and therefore the creator of all species on Earth. This led to Kimkadians adopting phrases like ‘Great Darwin’ or ‘Good Darwin’ whenever they tried to express surprise in English. In addition, they took for some reason to greeting new humans with the phrase ‘Praise be to Darwin’ and then eventually preceding almost every sentence with the same.
c) Finally, Kimkadians constantly introduced ‘Hah!’ into almost every phrase or sometimes every Earth word they spoke. This not only led to Da-Ha-Win but also Da-Ha-Winian. It also made Kimkadian conversations very long and tedious.
Anyway, out of all that the marketing experts came up with Da-Ha-Winian rabbit, a pet now popular as much on Earth as Kimkadia.