Trisha Shetty (Editor)

Critical distance (animals)

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Critical distance for an animal is the distance a human or an aggressor animal has to approach in order to trigger a defensive attack of the first animal.

The concept was introduced by Swiss zoologist Heini Hediger in 1954, along with other space boundaries for an animal, such as flight distance (run boundary), critical distance (attack boundary), personal space (distance separating members of non-contact species, as a pair of swans), and social distance (intraspecies communication distance).

Hediger developed and applied these distance concepts in the context of designing zoos.

Since the critical distance is smaller than the flight distance, there are basically two scenarios in the wild when the critical distance may be encroached: the animal noticed the intruder too late or the animal was "cornered" to a place of no escape.

For humans, Edward T. Hall, the cultural anthropologist, reasoned that, with very few exceptions, flight distance and critical distance have been eliminated in human reactions, and thus proceeded to determine modified criteria for space boundaries in human interactions.

References

Critical distance (animals) Wikipedia


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