It is not a language that can be used to talk with humans, but it can be used to communicate with dogs and cats. However, dogs and cats can communicate with each other. Of course, it is not so difficult to communicate with them. However, they do understand at least what is necessary for dogs and cats to survive. Let us consider an animal that is even closer to humans.

The most common animal that is close to humans is the monkey. In zoos, there is a society of monkeys called "Monkey Mountain. There is a boss monkey at the top, and a kind of society is formed under the boss. This is proof that the monkeys can communicate with each other. If monkeys had no language at all and could not communicate with each other, there would be no such thing as a boss of a monkey mountain. In this way, all animals talk to the same kind of animals around them. This is because without such communication, they would not be able to live together.
In fact, humans in ancient times were the same way. Our ancestors, who used to live together in one place, needed to talk with the people next to them. The kind of language that was created there gradually became the language of today over hundreds of thousands or millions of years. Therefore, language was not invented by someone somewhere at some time. It is something that has been created little by little over a long period of time.