Here are two examples of how to selectively brighten your wildlife photographs. Note that this rules aren't universal and should be done only when they make sense -- they are just examples to give you a better idea of how it works.
I wish there was a channel that shows pro editing of landscape photography in DarkTable. Thanks for the tips though, still learning a few things that can be applied to landscape photos too!
I may do some landscape tutorials also in the future. It's true, there are some fairly different techniques there, like sigmoid vs filmic for colors, careful use of masks to account for the typically higher dynamic range, etc.