This rarely seen deer, which is most active at dusk and dawn (3), is usually solitary and only occasionally travels in pairs (2). Moving about its territory, which males aggressively defend from others (3), the tufted deer searches for grasses and other vegetation on which to feed, with the white underside of the tail flashing into view with every bounce as it walks (2). If disturbed, the tufted deer may bark in alarm and will take flight, moving with nimble, cat-like jumps (2) (3).
The mating season, or rut, takes place from September until December (5), when the loud barks of the tufted deer can be heard more frequently (2). After a gestation of 210 days, a single young is born between May and July. The tufted deer reaches sexual maturity around the age of nine months (5).