Toque macaques prefer natural forest land ranging from sea-level up to 6,000 feet.

Somatometric growth in a natural population of toque macaques (Macaca sinica).

The two recognized subspecies of toque macaques are:

Toque macaques live only in Sri Lanka.

With the phasing out of the Smithsonian's association with this program in 1972, all but Dittus' study on toque macaques came to an end.

Heritability of body measurements in a natural-population of toque macaques (Macaca sinica).

Toque macaques are omnivores and like to eat fruit, seeds, nuts, mushrooms, tubers, invertebrates and occasionally animals, including reptiles and birds.

Both monkeys found in the park, Purple-faced Langur and Toque Macaque, are endemic to Sri Lanka.

The park is also important habitat for the two endemic monkeys of Sri Lanka, Purple-faced Langur and Toque Macaque.

The Black Claws are a street bred troop of Toque macaques who live in the periphery of Monkey City, relying of tourists for food.

Paternity assessment in wild groups of toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka using molecular markers.

In Sri Lanka, the naturalist also spends time with a troop of toque macaques - one of the most studied groups of monkeys in the world.

The program begins with "Temple Troop", a troop of Toque macaques who live in a temple area known as Fig Tree Vale.

Serologic evidence for an epizootic dengue virus infecting toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka.

The local distribution of highly divergent mitochondrial-DNA haplotypes in toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka.

Toque Macaque, Golden Palm Civet, Red Slender Loris, and Fishing Cat are among the other mammals that can be seen in Yala.

The reserve harbours many species of endemic mammals such as Purple-faced Langur, Toque Macaque, Mayor's Mouse, Ohiya Rat, Kelaart's Long-clawed Shrew, Sri Lankan Long-tailed Shrew, and Pearson's Long-clawed Shrew.

Animals featured included meerkats in the Kalahari Desert, American black bears in Minnesota, lions and African bush elephants in East Africa, toque macaques in Sri Lanka, gray whales off the coast of California, polar bears in Svalbard and giant otters in Peru.

The ecology and behavior of the toque monkey, Macaca sinica.

Somatometric growth in a natural population of toque macaques (Macaca sinica).

Heritability of body measurements in a natural-population of toque macaques (Macaca sinica).

ARKive - images and movies of the toque macaque (Macaca sinica)

P. semiovale - toque macaque (Macaca sinica)

Paternity assessment in wild groups of toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka using molecular markers.

Serologic evidence for an epizootic dengue virus infecting toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka.

The local distribution of highly divergent mitochondrial-DNA haplotypes in toque macaques (Macaca sinica) at Polonnaruwa, Sri Lanka.

He was awarded a PhD by the University of Maryland in 1974, his doctoral dissertation having been on 'The ecology and behavior of the toque monkey, Macaca sinica', in pursuit of which he moved to Sri Lanka in 1968.

Other mammals are Toque Monkey Macaca sinica, Common Langur Presbytis entellus, jackal Canis aureus, Fishing Cat felis viverrina, wild boar Sus scrofa, Indian Muntjac Muntiacus muntjak, spotted deer Cervus axis, and sambar C. unicolor.