I'm trying to recall a short story I read some time ago.
It was the life of a large alien animal. It began with the narrator, runt of the litter, and their mother. The alien is driven away by the mother, becomes a predator, eventually a parent if I recall correctly, and then climbs a mountain to meet an elder of its kind. If I recall correctly, it may have died there.
This is hazy, but I feel like the color red may have been important.