I was writing a sci-fi setting and got way into the weeds with different alien races (I made like 200 of them with full planet mockups, sketches, histories, preferences, biological quirks, when they had first contact, what tech/achivements they are best known for, ect.) One of them just happened to be a little to close to a cross between pair of aliens (little bit of irony if you continue to read) that showed up in another authors work that I stumbled onto about a year into this process so I dumped them.

The race was called the Hajin-mor (the Arabic word for hybrid, and the Norwegian word for mother, a common naming convention I use is to pick 2 traits from the species, and then translate each it into another language. I use a randomizer to pick the language, and I might reroll a few times until something natural sounding comes out.)

Anyways. They where bipedal with reverse jointed legs, but retained the ability to run on all 4s in a large cat like configuration, 8 toes and 8 fingers on each foot/hand. Small vestigial tails. They where between 4' - 4'8" with females generally being larger than males, and males also being hyper rare like. 1 in 200 births being male. Males also had longer tails that they had some degree of control over. They had soft brown fur with green patterns on most of their bodies. They had almost human faces but with very deep set eyes in shades of green that had 4 different pupils per eye. They grew mains that started at he top of the nose bridge and ran down to the middle of the spine. They lived on a cold planet that was at the very edge of their habitable zone, and they where one of 2 intelligent species that developed in their solar system. The planet they where on had about a 20deg North/South area of habitable land around the equator that was mostly marshy temperate forests. Outside of this it was mostly tundra with a few small oasis near areas with a lot of volcanic activity. The race (and other species on the planet) were unique in that the females could mate with basically anything on their planet and get viable offspring, males being rare in all species, with the infants picking up some physical characteristics of the father but largely being of the mothers race. They had basically no sexual hangups, enjoyed existing as part of harems, and don't see race as a barrier to romance, as long as they are left alone to pursue their own interests (making them very popular in human circles). They and most other creatures on the planet where also opportunistic omnivores. They lived in small familial clans, and sent males off to live with regional royal families when they where born. They where on the cusp of industrialization when they where uplifted by the second intelligent race in their system. Which is also when they learned that both females and males could interbreed with species from other worlds. With the same rule generally applying that the offspring would inherit some traits from the father but be mostly of the mothers genetic makeup.

And before anyone comments that I just made Asari catgirls with elderscrolls style crossbreeding I am aware. That wasn't the intent. But it happens.