Sloths usually live in trees but do, occasionally, swim across bodies of water so could be exposed to predation by a caiman. However, the caiman is not the main predator. The main predators of sloths are the jaguar, the harpy eagle, and humans.
They do not meet each other. Black caimans live in rivers and streams. Sloths live high up in trees.
Black caimans live in rivers and streams. Toucans live high up in trees. They won't meet each other.
Green anacondas prey on small caimans and small black caimans. Jaguars are known to kill and eat female black caimans, but not the large male black caimans.
A very large green anaconda could kill and eat a black caiman. Jaguars can kill black caimans on land.
Jaguars do kill and eat small sized caimans, but not much of the large black caimans.
Honestly, an anaconda doesn't eat every day.
Yacare caimans, black caimans, jaguars, and large groups of piranhas prey on yellow anacondas.
Green anacondas, jaguars, and black caimans prey on common caimans.
Green anacondas kill small caimans usually by ambush. It will coil around the caiman and squeeze it to death, and keep its head away from the caiman's jaw. Anacondas won't attack black caimans. Jaguars eat caimans all the time. They have been recorded to kill even black caimans by biting their skull.
Large green anacondas and large black caimans are known to kill jaguars.
Yellow anacondas prey on fish, reptiles, and geese.
Jaguars, black caimans, and very large groups of piranhas eat anacondas.
Spectacled caimans and common caimans are common food for anacondas and jaguars. Large black caimans have no predators.
Small caiman are eaten by anacondas, jaguars and bigger caimans. Nothing eats big caimans such as the black caiman.