Don't try to lock horns with these guys, they'll shrug off your attacks!

Flat, shieldlike horns.

• Can vary in size and shape.

NOT ALLOWED:

• The two horns can be set fairly close together, but should not be connected.
• Shouldn't resemble a crest (Like that of triceratops, chameleons, etc.)

If you're unsure if your idea is valid, feel free to ask.