um i had 2 tabs in firefox of my 2 rocs bluestreak(the female) had no energy  and pitch black (male) had 2 energy and i didnt realize that pitch black was the active pet when i clicked on breed on bluestreaks page it let me go to the breeding page and i selected pitch black but on the confirmation page i realized it was trying to breed pitch black to himself i didnt click confirm so i do not know if it would let me. but i dont think it was supposed to do that as when i changed to bluestreak as active pet told me the standard msg that she didnt have enough energy.

If you actually click the button it throws an error:

• Breeding of same gender pets is impossible!
• Breeding of same gender pets is impossible!

well thats good to know but weird it even went as far as it did lol

Yeah, the fact it lets you click through on a pet that's not your active as if it was is probably not the best.

The pet in the bottom box is your active pet. You won't be able to breed the pets of same gender or different species, you will get an error with the reason why you can't breed them.