Just some mutations I saw when searching up the other mutations in game. Thought some were interesting. Articles from here: Link

1. Four ears. This feature is associated with a recessive mutation that results in four ear flaps (additional flaps do not lead to additional organs of hearing). Sometimes, due to these duplicated ears, a cat’s eyes may be reduced in size and its jaw slightly undershot. Carriers of this trait can be relatively inactive and lethargic and may struggle with possible interferences of brain functioning. This mutation also seems to be lethal, with most kitten carriers actually dying in utero. Despite these data, the majority of recently-reported four eared cats have actually been healthy, indicating that there may be more genes involved in this unusual ear configuration.

2. Munchkin legs. This is the trait of shortened legs, and it is caused by a dominant mutation in the Munchkin gene, Mk. Homozygous (Mk Mk) carriers may be at a higher risk of dying as the kittens are very small in the litter. However, the mutation doesn’t seem to cause impaired mobility or spinal problems, and Munchkin cats are not disabled despite having short legs. The anomaly is not achondroplasia but can be either hypochondroplasia or pseudochondroplasia (meaning
that the long bones of the legs are affected and other bodily proportions remain unaffected).

3. Syndactylism. This is a trait associated with the Split Foot gene, Sh. The dominant mutation of the gene causes a reduction in the number of toes on a cat, giving it a so called “lobster-claw” appearance.

Unsure whether they'd be classified as lethal, as it's possible for them to live with these mutations, so I'd like to know what you all think! Lethal, or non lethal, please comment what you think <3

Votes for mutations being non lethal:
-Four ears: 2
-Munchkin legs: 2
-Syndactylism: 1

Votes for mutations being lethal:
-Four ears: 0
-Munchkin legs: 0
-Syndactylism: 1