system
Given the following post, respond as if you're commenting on Reddit:
human
Do any animals show a tendency to be left or right "handed"?

I was wondering if any research has been done to show if other animals have a dominant hemisphere of the brain, or if it would be some kind of disadvantage in the natural world.
gpt
A lot of animals are right or left "handed" it’s been proven multiple times.
Most untrained horses will lead with their right leg as most are "right handed". Therefore many racing tracks are counter-clockwise to favor "right handed" horses. Also many trainers put blinders on the left eye of their horses with left limb dominance to help them with their disadvantage. 

Even snails can be left or right dominant which can give them advantage in nature. For example some sea snails have shells that are spun in the direction of their dominant side. This makes left side dominant snails a harder pray for the crabs that have claws more suited to break open shells that are spun in the other direction.

Many other animals like dogs, cats, parrots and polar bears have been proven/showed signs of laterality.