Camelidae and Cervidae Spitting Behavior – NAVLE Study Guide

Overview and Clinical Importance

Spitting behavior is a distinctive and clinically significant defensive and communicative mechanism observed primarily in Camelidae (llamas, alpacas, guanacos, vicunas, and camels). Understanding this behavior is essential for veterinarians working with these species, particularly for safe handling, accurate behavioral assessment, and distinguishing normal from pathological aggression. While Cervidae (deer, elk, moose) do not exhibit true spitting behavior, they employ alternative communication methods including scent marking, licking branches, and saliva deposition that are important for disease transmission considerations, particularly chronic wasting disease (CWD).

For the NAVLE examination, understanding camelid spitting is crucial for questions involving restraint techniques, behavioral assessment, aberrant behavior syndrome (Berserk Llama Syndrome), and zoonotic disease considerations. This behavior represents a unique evolutionary adaptation among pseudoruminants and has direct implications for veterinary practice safety.

Camelidae: Taxonomy and Basic Biology

The family Camelidae consists of six species divided into Old World Camelids (OWCs) and New World Camelids (NWCs), also called South American Camelids (SACs). All camelids are capable of spitting, though the frequency and triggers vary between species.