From Wikipedia:
The common warthog is a medium-sized species, with a head-and-body length ranging from 0.9 to 1.5 metres (2 feet 11 inches to 4 feet 11 inches), and shoulder height from 63.5 to 85 cm (2 ft 1 in to 2 ft 9 1/2 in).

Common warthog ivory is taken from the constantly growing canine teeth. The tusks, particularly the upper set, work in much the same way as elephant tusks with all designs scaled down. Tusks are carved predominantly for the tourist trade in east and southern Africa.