Calico Cats are Female
Since I saw another fic writer calling a boy cat a calico…. here’s a tidbit of information some of you may not know!
The calico fur pattern is a Sex-Linked Trait - as in a kitty has to have two X chromosomes in order to get that distinctive Black+White+Orange fur. No calico cat will be a boy (unless they’ve got an abnormality between their chromosomes and apparent biological sex i.e. an XXY or an XX with a male-seeming body.)