• Our work is leading us to an ever-increasing knowledge of the density patterns found in the medium and small sized cats of Brazil. In the book chapter “Ocelot ecology and its effect on the small-felid guild in the lowland Neotropics” from the book Biology and Conservation of Wild Felids (Oxford University Press, 2010) and some other papers we have shown that the larger ocelot attains higher densities than the smaller cats. Ocelot densities are typically on average 0.3 individuals/km2 (0.01–1/km2), whereas the tropical species of the smaller cats (< 6 kg), at their highest densities reach 0.25/km2, and are typically found below 0.15/km2, most likely on the range of 0.01–0.05/km2 or lower. This is the typical pattern of jaguarundis, margays, northern and southern tiger cats.

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• Another interesting fact is that we usually manage to estimate densities of the smaller cats almost only where ocelots are either rare or absent – see “ocelot effect”