'Spitting' behaviour was examined in selected taxa of Naja and Hemacha
tus. A description of the kinematics and variations of spitting in eac
h species was generated from the analysis of videotape records of over
400 spits. Interspecific variation was noted in the spitting behaviou
r. Intraspecific variation ranged from very stereotypic spitting in N.
siamensis, and H. haemachatus, to N. pallida and N. mossambica in whi
ch every aspect of the behaviour was variable. A striking lunge and ex
halant burst of air may occur as part of the spitting behaviour, but a
re not essential agents in venom spitting.