Macedo, Joana "Ameaça ou Ameaçada? As Controvérsias Sobre as Múltiplas Onças na Amazônia," Anuário Antropológico, Vol. 41, No. 1 (2016)

The onça-da-coleira-branca [white-collared jaguar] was mentioned twice. The animal was seen in a community in the late afternoon, while the locals were playing football. The jaguar was sitting at the edge of the forest, "enjoying the ball-game". When noticed, it fled into the woods and was not seen again ... the onça-da-coleira-branca has been described as a black jaguar with a strip of white fur around its neck. There was also a mention of the onça-preta-do-peito-branco [white-breasted black jaguar].

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There have been three reports of the killing of the onça-tigre. In the first, the ribeirinho claims that he killed a male animal — like a spotted jaguar, but it was bicó (tailless), with its hands turned backwards ... the hair was very short on the back, and the chest was hairy. The hunter's wife saw the animal and confirmed the description. The second informant also killed and measured the onça-tigre, which was 9 spans (about 1.80 metres) from the chin to the base of the tail, with a tail 3.5 spans (about 70cm). The coat ... was yellowish from the chin to the chest and white on the belly, and the dorsal area was completely black, without rossettes. The coat was very short and shiny, and the eyes were yellow. This onça-tigre was killed while attacking the dog which walked with the ribeirinho. He took the onça-tigre's paw and ear back to the community, to show his neighbours that he had killed a different jaguar. The third onça-tigre, killed in retaliation for preying upon cattle, was described by a local as male, spotted, huge, and with long tusks sticking out of his mouth.

A ribeirinho recounted that his neighbour once killed an onça-pé-de-burro [donkey-footed jaguar] and brought it back to the community. It was described as very large and very foul-smelling, similar to a tapir, but with the hands of a jaguar and the feet of a donkey. In another account, a gentleman said that his grandfather, when he was young, had killed a family of onça-pé-de-burro, a mated pair and two cubs. He was sleeping alone in the woods, heard whistles, went to look, and found the two onça-pé-de-burro. He shot them both, and when morning came he found their two cubs. He said they were black, did not climb trees, whistled like a tapir, and had the hands of a jaguar and the feet of a donkey.  

In the Foz do Rio Jutaí region, indigenous Cocama people described the onça-d'água [water jaguar], an animal which they encounter mainly in igapó, the flooded forest. The onça-d'água is supposed to be similar to a black jaguar, but it lives in the water "like the boto," having a "duck-shaped hand" with swimming membranes. A gentleman narrated an encounter with one of them while sawing wood in the igapó. When he went to the canoe to fetch a saw and a handful of tobacco he saw the "back" above the water. So he and a friend climbed a tree and waited for the onça-d'água to leave. The onça-d'água, as an aquatic being, would not know how to climb trees, living with "its head at the bottom". The onça-d'água was mentioned on four other occasions, with ribeirinhos reporting not personal sightings, but the sightings of neighbours and relatives. Although they did not give any detailed description of this animal, they asserted that it is not an otter (called onça-d'água in some regions), but a different type of jaguar that lives in the igapó.

There was also mention of a jaguar, seen by a local, which was described as a mixture of the jaguar and the black jaguar: the head was like the jaguar, then it was black and, in the middle of the body, it was spotted. No specific name was given for this jaguar. Although extremely rare, this description refers to chimerism, a genetic alteration caused by the fusion of embryo cells, resulting in an individual who, due to having two genotypes, can manifest two phenotypes.