Kangaroo the sniffing gains much information from smell cues. This behaviour enforces social cohesion without consequent aggression. During mutual sniffing, if one kangaroo is smaller, it will hold its body closer to the ground and its head will quiver, which serves as a possible form of submission. Greetings between males and females are common, with larger males being the most involved in meeting females. Most other non-antagonistic behaviour occurs between mothers and their young. Mother and young reinforce their bond though grooming. A mother will groom her young during or after it is suckling. A joey will nuzzle its mother's pouch
Kangaroo industry from whom, and the relevant tags numbers. The kangaroo management plans have been operating under strict and intensive supervision for almost 30 years. Over this period, the average harvest per year has been in excess of 2 million animals. Despite long-term harvests in excess of 2 million animals per year, the kangaroo population has consistently increased. Even following the worst drought on record (2005–07), numbers in 2008 are still at what could be considered historically typical levels. Their current population of 25 million is only marginally lower than the 25-year average of 26.7 million (which is skewed by the very