FND attack dogs are guard dogs that run with Castillo's soldiers and charge you on sight. They are fast and hard to hit, so kill them before they close in and pin you down.
Attack dogs sprint straight at you once they notice you and keep up the chase across land and water. When nothing hostile is near, they will go after wildlife such as coyotes, and they will scrap with other dogs.
Swap to a sidearm or shotgun when you hear barking, since rifles are slow to track a running dog. Kill the dog first, then deal with its handlers. A takedown or a single shotgun blast up close is the cleanest answer.
They turn up with FND patrols and around guarded sites. Expect them anywhere soldiers gather, and listen for barking before you push into a base.
Barracuda
Barracuda are fish you catch at fishing spots around Yara's coast, and their meat is useful for trading and cooking. A Barracuda brochure shows you where several of those spots are.
Black Hawk
The black hawk is a bird of prey you can hunt in Yara for its meat. It poses no danger to you, and the meat trades for Durable Plastic, which makes it worth a quick shot when you see one.
Bull Shark
Bull sharks are the dangerous sharks in Yara's waters, and you can also catch them at marked fishing spots. Their meat is good trade stock, but swimming near one is a bad idea.
Cougar
Cougars are big cats that stalk Yara's mountains and attack you on sight. They are worth hunting, because cougar meat trades for Durable Seals and cooks into stealth-boosting Ninja Nachos.