- The Croods are both knuckle-walkers and bipedal.
- They have the ability to speak and comprehend language. They can communicate like humans.
- They wear clothing such as fur.
- They can utilise fire.
- They have big teeth, robust bones and muscles.
- Because of their big teeth, it indicates that they eat tough foods.
- They domesticated animals.
Because of these points, I can infer that they are related to/ are Homo neanderthalensis.
Guy seems slightly more advanced than the Croods which I think makes him related to/ is a Homo sapien.