One of my male Lykos won't show up as available for any of my females. He hasn't hit breeding limit, my females haven't hit breeding limit, I have stable space, and both of them have energy. I'm pretty sure this is one of the Lykos I changed from female to male, and maybe his breeding limit is still reading from his past female form.

I can still see and breed with the other male Lykoses, just not him. 

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Works now, thanks Voron :D

Are sure if it's still that way? Because when I visited his profile with one my females as an active pet, the option 'Breeding Offer' was not gray, means I could let her breed with your male.

Thank you for reporting. This issue is fixed. Sorry for the inconvenience.