I will proudly and loudly proclaim that I'm biased against pedophilia, nercophilia and bestiality.
I suppose it is a good thing that a fictional elf kissing a feline humanoid is none of these three things, then.
As for the OP, leonin are a cross-over race from Magic the Gathering. They don't exist in Faerun. But we might end up getting Tabaxi which are Faerun's equivalent to a catfolk race.