YES.
Cougars and humans are both placental mammals. That is about as close as they are related.
Humans are more closely related to mice. Humans and mice are both mammals whereas snakes are reptiles.
They are related to humans only in the fact that they are also mammals.
Humans are animals. Humans are mammals and mammals are animals. Everyone should know that! Firstly, animals and humans both have the same cells. Mammals (like elephants) and humans both give birth to young. They can both stand on two legs or four.
Humans are mammals
From an evolutionary perspective, all mammals are related, so yes, humans and horses or zebras are related, although not closely; humans are much more closely related to the great apes (gorillas, bonobos, chimpanzees, and orangutans). From a creationist perspective, humans and horses are not related.
Humans are mammals - all humans. However, not all mammals are humans.
Almost all mammals are 'placental'. Humans, tigers, dogs, cats, cows, mice, elephants, etc.
Eutherians are a group of mammals consisting of placental mammals plus all extinct mammals that are more closely related to living placentals (such as humans) than to livingmarsupials (such as kangaroos).
Humans ARE mammals
Humans are a subset of the bigger Group mammals.