De Waaghals (= The Dare-devil) is a very nice vegetarian restaurant. The atmosphere is informal, but the food is very nice, refined and creative. Organic ingredients are used as much as possible. Each month a dish focuses on a different country.
Not a big fan of zoos and animals behind cages, but if you can spot Flamingos in the east-centre of Amsterdam, then count me in <3 ! You can actually see them while riding the bike on Plantage Middenlaan, quite a beautiful scene.
Note: De Plantage next to zoo is quite cool cafe/restaurant, with a mix of vintage style and industrial elements of the old buildings of Artis. Great atmosphere, and ideal for a more sophisticated outing.