First, let's see why herbivores didn't evolve sharp teeth. The tenacity of carnivores has a lot to do with their sharp canine teeth. When hunting, sharp canine teeth can pierce the skin of prey, as long as they bite the neck, back neck, skull and other key parts, it can be almost fatal. But for herbivores, except for a few animals with alienated canine teeth, all other herbivores have no sharp teeth. Why?
Eating habits determine the structure of teeth.
The reason why herbivores have not evolved sharp canine teeth has a lot to do with their eating habits. Even animals with alienated canine teeth like elephants have exposed canine teeth, because their main food is plants. When eating plants, the first thing they have to do is to cut food. So herbivores evolved developed front teeth.
It's just that the front teeth can just bite off the food and put it in your mouth. Because plant food is rich in a lot of fiber, if swallowed directly, it will increase the burden on the stomach. Therefore, herbivores need well-developed molars to grind food. This completes the whole feeding of herbivores. So food is very easy to get, and you don't need canine teeth to help you eat. In the end, there is no need for individual evolved canine teeth, which is why herbivores do not have sharp canine teeth.
In order to make up for the aggression without canine teeth falling off, herbivores are also "showing their magical powers"
Without sharp canine teeth, it means that in the face of danger, they can't bite each other and cause fatal injuries. Therefore, herbivores at the bottom of the food chain also need defensive weapons, and in the breeding period of herbivores, they have to fight for the opposite sex through duels, so they also need offensive "weapons". Therefore, different animals have their own "unique weapons".
Most herbivores choose horns as weapons. They put their horns in their most deadly position, so that when facing predators, the "horns" can play a good offensive and defensive role. The horns of herbivores are usually divided into two types: one is the bony horn like cattle, sheep and antelope, and the other is the horny horn like rhinoceros. Although the ingredients are different, they are all hard.
Herbivores without horns choose other ways, such as elephant's canine teeth, hippo's canine teeth, strong body, extremely fast running speed (antelope) and so on. In a word, herbivores weaken the aggression of teeth, so they need to make up for it in other ways, such as strong escape ability, strong physique, sharp horns and so on.
Why didn't herbivores evolve sharp claws? A sign of carnivores is that they have sharp claws, but for carnivores, some of their claws are retractable (most cats) and some are not retractable (canines), so relatively speaking, animals whose claws can be retractable into the claw sheath have much sharper claws.
However, most herbivores do not have claws, but use hooves instead of claws. And they use hooves instead of claws because they have to.
First of all, not all herbivores have no claws. Because koalas and sloths are highly arboreal animals, they need stable grip to climb trees, so they have claws. However, most herbivores living on land are ungulates.
Why do most herbivores use hooves as a last resort?
First of all, there are only two ways for herbivores to avoid being killed by carnivores: one is that they are much bigger than carnivores, just like elephants and rhinos; One is to have an extremely fast running speed.
No matter which of the above conditions is met, it is inseparable from the support of an organ, that is, the foot. Huge animals put a lot of pressure on their feet. In order to make their "feet" bear more weight, most herbivores have evolved hard horns, which are what we call hooves, which are unbearable for claws.
Secondly, if you want to run fast, you can't do without your feet. Let's give a very simple example. Cheetah is a fierce carnivore, but in pursuit of extreme speed, its claws are inflexible and dull, because they can provide some support and grip when running. However, the more frequently the paws rub against the ground, the duller they become, which means that the paws of cheetahs are similar to those of herbivores. However, although cheetahs run fast, they only run when hunting and avoiding danger, and usually have more rest. But herbivores are different. They have been standing and running at any time almost all their lives, so their "feet" are used much more frequently and their requirements are much higher.
So for herbivores, only harder feet can support them to run at high load, high speed and for a long time (wear resistance), so they evolved hooves instead of claws.
The conclusion is that herbivores can get food relatively easily without special hunting organs, and the characteristics of food (high fiber) make them not need sharp canine teeth. If they have sharp canine teeth, it is not conducive to their chewing, so they don't have sharp canine teeth. Coupled with the habit of running and standing for a long time, they must have hard and wear-resistant feet, so they did not evolve sharp claws, but replaced them with hard and wear-resistant hooves.