5 animals that eat their own parents– the reason will leave you shocked

Parental care in the animal world is often viewed through the lens of sacrifice– but in a few species, that sacrifice goes far beyond what most would expect. While many animals protect and raise their young with fierce dedication, there are rare cases where the final act of parenting ends with the mother being consumed by her offspring.


This behaviour, known as matriphagy, isn’t the result of aggression or accident. It’s a survival strategy shaped by evolution– one that ensures the young get a strong start in life, even if it comes at the cost of the parent’s life. Though it may sound extreme, it’s surprisingly common in some species, especially among spiders and a few insects.


Here’s a closer look at animals that rely on this unsettling but natural form of nourishment.

The black lace-weaver spider (Amaurobius ferox) begins its role as a parent by producing unfertilised eggs, solely meant to feed her hatchlings. These “trophic eggs” are the spiderlings’ first meal. But once they’ve consumed the eggs, they move on to the next available food source– their own mother. This process is not accidental; it’s hardwired into their lifecycle. The mother’s death increases the young spiders' chances of survival and development.

Australian crab spiders (Australomisidia ergandros) follow a single-use parenting model. The female lays one batch of eggs in her lifetime. Once they hatch, she has no way of feeding them with trophic eggs or any other resource. As a result, the spiderlings begin consuming their mother soon after birth. This behaviour is biologically programmed and ensures the young receive the nutrition they need without any delay.

In some desert spider species such as Stegodyphus lineatus, mothers initially feed their young by regurgitating partially digested food. But as time goes on and her energy reserves drop, her body starts breaking down from the inside. Over the course of two weeks, her organs liquefy into a substance that her spiderlings can feed on. The process continues until there’s nothing left but her outer shell.

The African social spider (Stegodyphus dumicola) adds a communal element to this pattern. Multiple adult females help raise the brood, and when food becomes limited, several of them– not just the biological mother– may be eaten by the young. This group-based version of matriphagy helps ensure that at least some offspring make it through tough environmental conditions.

Though matriphagy is mostly observed in spiders, a few insects like the hump earwig (Anechura harmandi) show similar behaviour. In some cases, when no food is available and the young cannot survive on their own, they begin feeding on their mother. These instances are less common but still reflect the same evolutionary principle– the mother’s body becomes the final source of energy.

In species that follow this method, the act of being eaten isn’t viewed as unnatural. These mothers are biologically prepared for this end. In tough environments with limited food and high risks, such sacrifices give the young a far better chance of survival. It’s not violence or chaos– it’s a calculated trade-off that nature has fine-tuned over generations.