The tag implication #63350 calico_cat -> tortoiseshell_cat has been rejected.

Reason: Calico cats are genetically just tortoiseshells with white markings. Since they're still tortoiseshells, they should imply tortoiseshells. People who want to only see non-calico tortoiseshells can do tortoiseshell_cat -calico_cat.

https://en.wikipedia.org/wiki/Cat_coat_genetics
https://en.wikipedia.org/wiki/Tortoiseshell_cat
https://en.wikipedia.org/wiki/Calico_cat

^ Not very in-depth and worded confusingly, if you care enough about cat genetics to be more interested I'd check out Messybeast:

http://messybeast.com/tricolours.htm

EDIT: The tag implication calico_cat -> tortoiseshell_cat (forum #406444) has been rejected by @Nimphia.

A calico cat is not to be confused with a tortoiseshell, who has a black undercoat and a mostly mottled coat of black/red or blue/cream with relatively few to no white markings. However, outside North America, the calico pattern is more commonly called tortoiseshell and white.
- https://en.wikipedia.org/wiki/Calico_cat

The factor that distinguishes tortoiseshell from calico is the pattern of eumelanin and pheomelanin, which is partly dependent on the amount of white, due to an effect of the white spotting gene on the general distribution of melanin.
- https://en.wikipedia.org/wiki/Cat_coat_genetics

"Tortoiseshell" is typically reserved for multicolored cats with relatively small or no white markings. Those that are predominantly white with tortoiseshell patches are described as tricolor, tortoiseshell-and-white, or calico (in Canada and the United States).
- https://en.wikipedia.org/wiki/Tortoiseshell_cat

Just going off the wiki articles you posted, calicos are both genetically and visually distinct from tortoiseshells.

If anything, I could see implicating a tag like tortoiseshell_pattern to calico_cat and tortoiseshell_cat

dirtyderg said:
Just going off the wiki articles you posted, calicos are both genetically and visually distinct from tortoiseshells.

If anything, I could see implicating a tag like tortoiseshell_pattern to calico_cat and tortoiseshell_cat

They're not genetically different, the articles are worded in a confusing way. Tortoiseshells can have white spotting, calicos just have more. The defining factor (the black/red coloration) is caused by the same genetic factor, the white spotting gene is separate.

You can have cats with "tortoiseshell" visual patterns (mottled, rather than patches) AND high white spotting. People call these "torticos". But in reality, it's just because they're not that delineated. The word "calico" isn't even used outside North America, they're just tortoiseshell and white.

I recommend looking into cat genetics beyond just Wikipedia, I just linked those articles for an introduction.

Messybeast is my go-to for more in-depth genetic information: http://messybeast.com/tricolours.htm

We don't care about the genetics, tags are visual. If we cared about the genetics, we'd tag every male calico with crossgender.

Voted :/ because these (color)_cat "species" tags are dubious as hell.
But yeah, either an implication or an alias (I'd personally go to tortoiseshell because it's what I see mostly) should be put in place. Looking at the tortoiseshell tag there's not really a significant difference between them and other than objecting to a genetic argument on principal, I don't know why people are arguing that there is.

votp said:
We don't care about the genetics, tags are visual. If we cared about the genetics, we'd tag every male calico with crossgender.

Well, I know that. (Also male calicos exist.)

Like I said. The only visual distinction is the amount of white spotting. The brindling pattern can appear in both.

This argument feels silly to me regardless, you could argue the same thing about the taxonomy tags.

I'm gonna reject this but at the very least these need major cleanup.

The tag implication calico_cat -> tortoiseshell_cat (forum #406444) has been rejected by @Nimphia.