Faucaria felina subsp. tuberculosa 
Native range: South Africa
Known names: Shark's Jaws, Tiger's Jaws, Faucaria tuberculosa
Hardiness: Best kept above freezing
Mature Size: ~3" tall, clump forming
Light: Full sun - Half-day sun. Avoid desert sun
Water: Water a little more often in winter (growing season)
Soil: Fast draing, coarse succulent soil
Dormancy Period: Spring-Summer
Pet-Safe: No
Plant Size: Grown in 2.5" pot
 
This is an exceptionally warty form of Faucaria felina