Wheel entries:

• Gem in chest
• Spikes on back
• Heat resistance
• Night vision
• Fire breath
• Thick claws
• Long thick tail
• Diamond (pupils)
• Straight (horns)
• Jagged (horns)
• Thick hard scales
• Short snout
• Jaw spikes 
• Short nose spike
• Neck spikes
• Spikes under eyes
• Spikes on elbows
• Spikes at the base of wings
• Club like spikes on tails
• Normal ears