Title explains it all. We have a ‘Sex Swap’ item, but not one that changes the pose whilst maintaining the same breeding capabilities.
I recognise that the game has customisable pronouns so you can technically ignore the in game genders if you want, but there may be cases where people simply want different poses for custom apparel reasons or because they may vastly prefer a specific pose, but would like the wolf to maintain the same function in breeding.
The visual differences in anatomy for these wolves aren't really present anyway (at least for the breeds currently released) Not that it would really matter either way. But generally, there seems to be no reason to limit the poses to a specific in-game sex. At least an item that can let you swap would be nice.
There is also a suggestion related to this one here by another user regarding making pronouns more obvious as well. I think both of these suggestions combined would provide players with a lot of freedom.