Rincón de la Vieja National Park
Please see the first post on Costa Rica for important details about this post.
Not too far from Liberia is Rincón de la Vieja National Park - one of the more remote parks in Costa Rica. After driving over 20 km of gravel road, one reaches a small parking lot with a ranger station and a trail map, from where you can hike to several different places. One of the nicer areas is supposedly some waterfalls, but unfortunately halfway to the waterfalls it started pouring and the trails flooded very quickly.
However, right at the beginning of the trial we started hearing an increasing number of rustling noises. In a few minutes we watched a whole group of coatis (related to raccoons) cross the trail and field, including several young coatis. Here's some of them:
We finally got back to the car completely soaked, but luckily with nothing damaged.