1) Eating behavior 
Osteophagy is the practice whereby herbivores consume bones. This practice usually occurs in a nutrient-deficient environment. The animals consume the bones in order to obtain such necessary elements as phosphorus and calcium. ...
osteophagous, ostephagia, osteophage, osteophagy Eating bones, which is a perverted appetite seen in cattle suffering from mineral (phosphorus or calcium) deficiency.