Attitude of a tripod is a behavior in which the four-legged animal is behind the hind leg and uses its tail to support this position. Some animals use this behavior to improve observation or supervision, and during feeding, treatment, thermoregulation, or fighting.
Video Tripod stance
In mammals
The common civet dwarf ( Helvale parvula ) adopts a tripod attitude when alert for predators. In the same mammal, a thirteen-squirrel earthen squirrel ( Spermophilus tridechemlineatus ), the alert behavior includes four postures: (1) quadrupedal warning (all four feet on the ground with heads above horizontal); (2) semiupright warning (on hind legs with special hunches); (3) an upright alert (behind the leg with a straight back and mostly perpendicular to the ground); (4) the warning is perpendicular (similar to the upright warning except that the squirrel spreads its hind legs, (see the meerkat picture).In meerkat ( Suricata suricatta maintaining behavior , or for a much longer period when the animal is not feeding, in this case it is called sentinel behavior .
Macropods can stand upright on their hind legs, supported by their tail as the third leg of a tripod. Macropoda is also involved in "pentapedal movement," an inefficient gait used at slow speeds, where "the tail is used, with the forelimb, as the tripod's third leg to support the animal while the large rear members move forward."
The giant Armadillo ( Priodontes maximus ) has a well-developed sense of smell but poor vision. When approached by a potential threat, they climb onto their hind legs, supported by the tail and start sniffing from side to side. The attitude of the tripod is similar to the defensive position adopted by anteaters and allows them to claw with very sharp claws if suddenly attacked.
It has been reported that desert woodrat ( Neotoma lepida ) bore "... in a bipedal position supported by a tail."
Maps Tripod stance
In reptiles and amphibians
Monitoring lizards like Komodo ( Varanus komodoensis ) is quite commonly standing on a tripod formed by their hind legs and tails.
Colorful Salamanders ( Salamandrina terdigitata ) sometimes stand on their hind legs backed by their tails. It reveals their brightly colored stomach, but the behavior (referred to as "standing behavior") is done in the absence of a salamander or other predator, and its function is unknown.
Some dinosaurs may also occasionally adopt a tripod attitude.
Similar behavior in non-quadruped
Some non-fourfoots adopt an attitude like a tripod and may have a special structure to accomplish this.
The tripodfish ( Bathypterois grallator ) has long, bony rays protruding beneath the caudal fin and pectoral fins. Although the fish body is 36 cm (14 inches), its fins can be more than 1 m (3 ft 3 inches). The tripods spend a lot of time standing on their three fins on the ocean floor, hunting for food.
All woodpeckers have "zygodactyl" legs - two toes in front, two in the back - for help in attaching to the bark of a tree. In addition, rigidly modified tail feathers in most species help to support the bird in a tripod position when attached vertically.
Many leaf moth moths adopt a tripod attitude when resting on the surface.
- Non-quadruped truck-like attitude
See also
- Etogram
References
External links
- Image of the beaver in a tripod position
- Images of various rodent species in tripod position
- Image of monitor lizard in tripod position
Source of the article : Wikipedia
0 Comments