This is a nice, rare hippo tooth from Tulear, Madagascar in an acrylic display box. 
 
Length of tooth: 41 millimeters 
 
Location: Tulear, Madagascar
 
Age: 1000 years (approx)
 
There were once three species of hippo living alongside people in Madagascar, it is thought that due to overhunting and habitat loss, they had all become extinct around 1000 years ago.