What is the difference between a lion's teeth and a cow's teeth?
A cow has the typical teeth of a herbivore, with flattened grinding surfaces; while a lion has typical carnivore teeth, pointed and sharp for tearing flesh
Lions have a simple stomach for eating meat only, and thus are known as monogastrics. Cows, on the other hands, have a stomach with four chambers and also regurgitate partly digested food (which is plant matter) to be rechewed as cud. Thus, cows are known as ruminants. Lions are carnivores, and cows are herbivores.
Cattle and cows are basically the same thing (technically cows is just female cattle, cattle is everything-males, females, calves). The difference between dairy and beef cattle is that Dairy are cattle that are bred for the purpose of milk production. Beef cattle are ones that are used for beef production.
The horns are a defense against predators - when threatened, cows form a circle with their tails in the center and their heads out. The cows all lower their heads to put the horns between the predator and the rest of the cows. Cows can use their horns to gore wolves, coyotes, mountain lions and other large predators to death.