A great trip for wildlife is the Costa Rican Rain forest.
Day 1 - Fly from San Francisco to San Jose, Costa Rica and continue by small plane on to Puerto Jimenez on the Osa Peninsula and by bus to Lapa Rios.
Day 2 - 7 - Lapa Rios Resort is set in a private nature reserve spread over 1,000 acres of Central America's last remaining lowland tropical rain forest. We did a lot of hiking and bird watching in the rain forest around the resort. One great hike was at night, to experience the sights and sounds of the rain forest after dark, using flashlights to search for "eye shine," the forest's nocturnal creatures come alive after dark. The rain forest is really amazing and noisy day and night, there are so many animals, insects, birds, monkeys, etc.
We also took a 1 day trip to Corcovado National Park, which is original growth and a very old rain forest. The difference is quite amazing, the ground is quite clear in an old growth forest since all of the light is trapped high up in the canopy of the forest trees. Our guide is famous for tracking wild tapirs and he was determined that we would see one before we left. Towards the end of the day, we did manage to find a tapir. They are apparently very hard to find.
Day 8-10 - Arenal Volcano and Monteverde Cloud Forest are on opposite sides of a large lake and in the central part of the country, north of San Jose.
Day 11-13 - Tamarindo is a beach area in the northwest part of the country.
Day 14 - 16 - Xandari Resort outside of San Jose and then we headed back home.