This is the finial choise of “Journey" challenge, named "Take a Rest". That shows the moment means "Relax" and feed the "Pets". It's A part of Journey, not just walking is Journey, not just flying is Journey, not just fighting is Journey. someone is looking at map, and someone is drinking, two dinosaurs shows different personality of them.
If you want to see more details ,you can go here: https://www.artstation.com/contests/the-journey/challenges/1/submissions/2934