"Jacaré" is a bad documentary for quite a few reasons. It's dull, it has no dialog...just bad and ofen silly narration, and it's too often factually incorrect.
The story is supposed to be about an expedition to the Brazilian jungle to gather specimins for various zoos. However, occasionally they feature animals that simply are NOT from South America--such as the alligator and the buffalo. What's also terrible is that the narration isn't the least bit scientific and is meant to scare audiences instead of informing. Often the narration is also just plain dumb, such as when it says of one creature "these little creatures don't like anyone...even themselves!". Overall, dull and crammed with misinformation...enough to make biologists have heart palpitations!!
By the way, among the many 'facts' you hear about is that the black jaguar is '1 in 10,000'. Actually, the black version make up about 6% of all jaguars...1 in about 16-17 jaguars.