Animals and humans alike worry about tomorrow. They do this by eating and reproducing. Ultimately.
The wild animal does not ask for meaning. If it is in its natural environment, then it is in the sense and flows. Depression as an expression of permanent pain is alien to it. If the animal is in captivity and closed off from its natural flow, then it plucks out its feathers, becomes aggressive, hospitalistic and apathetic. It is permanently thrown back on itself as an individual being. Is this the state in humans in which they then ask themselves the question of meaning? Does this detachment from the flow imply this question and at the same time the fear of death? If man were back in his natural flow, would there then be neither depression, meaninglessness nor fear of death?