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A burrow is a hole or tunnel excavated into the ground by an animal to construct a space suitable for habitation or temporary refuge, or as a byproduct of locomotion. Burrows provide a form of shelter against predation and exposure to the elements, and can be found in nearly every biome and among various biological interactions .
For animals that burrow by compressing soil, the work required increases exponentially with body diameter. In amphisbaenians, an ancient group of burrowing lizard-like squamates, specializations include the pennation of the longissimus dorsi, the main muscle associated with burrowing, to increase muscle cross-sectional area.
The lugworm Arenicola marina Gobies keeping watch outside a shrimp burrow. The evaluation of the ecological role of bioturbators has largely been species-specific. [8] However, their ability to transport solutes, such as dissolved oxygen, enhance organic matter decomposition and diagenesis, and alter sediment structure has made them important for the survival and colonization by other ...
A fossil burrow of the Palaeocastor beaver.. Burrow fossils are the remains of burrows - holes or tunnels excavated into the ground or seafloor - by animals to create a space suitable for habitation, temporary refuge, or as a byproduct of locomotion preserved in the rock record.
Groundhog burrows usually have two to five entrances, providing groundhogs their primary means of escape from predators. The volume of earth removed from groundhog burrows in one study averaged 6 cubic feet (0.17 m 3) per den. The longest burrow measured 24 feet (7.3 m) in addition to two short side galleries. [16]: 108–109
Other animals that use them are hares, mongooses, hyenas, owls, pythons, and lizards. Without these refuges many animals would die during wildfire season. [35] Only mothers and young share burrows; however, the aardvark is known to live in small family groups or as a solitary creature. [6]
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A warren is a network of interconnected burrows, dug by rabbits. Domestic warrens are artificial, enclosed establishments of animal husbandry dedicated to the raising of rabbits for meat and fur. The term evolved from the medieval Anglo-Norman concept of free warren , which had been, essentially, the equivalent of a hunting license for a given ...