Can't trade Forest dragon

[DrP4ever]

Can anyone explain why I can't trade my Forest Dragons? I need green gems. One is a level 6, the other is level 4. I can sell them but I can't trade them. I think I have been able to trade them in the past. So confused!

[cocauina]

Some of the basic/single type dragons cannot be traded, Forest is one of them.
Not only single type dragons cannot be trade.

Fire, Forest, Air, Light, Water, Lotus, Olympus, Ninja, Rainbow dragons, Gemstone dragons and Gold dragons cannot be trade.

[DrP4ever]

Thank you. I thought I had traded some before so I was confused. Appreciate the help.

[cocauina]

You're welcome :)