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Both male and female parents have been observed to do this, as well as sterile worker castes in some eusocial animals. Filial infanticide is also observed as a form of brood reduction in some birds species, such as the white stork. [45] This may be due to a lack of siblicide in this species. [46]
Female and male gerbils were put into one of four housing conditions (parents only, parents and siblings, siblings, and unrelated). Again, a pup test was conducted (same as previous study above), with each male and female to observe responses to an unfamiliar pup in the cage, while progesterone was measured via blood sample following the test.
The higher frequency in common marmosets may be due to a variety of social, reproductive, and ecological characteristics - including higher likelihood for overlapping pregnancies and births (due to short intervals between births), habitat saturation, and lower costs of infant care compared to other callitrichids - that increase the chance of ...
Due to the reproductive behavior of female cheetahs, males are unlikely to commit infanticide. Unlike other African felids, no infanticidal behavior has been observed in the cheetah . [ 13 ] Scientists hypothesize that this is because many cheetah litters have cubs from different fathers and males would not want to kill any cubs in case they ...
A boa constrictor in the U.K. gave birth to 14 babies — without a mate. The process is called parthenogenesis, from the Greek words for “virgin” and “birth.” ... Yes, some animals can ...
To counteract loss of their pups elephant seals conceive next year's offspring immediately after giving birth to this year's young, but delay implantation for 4 months. Female striped mice ( Rhabdomys pumilio ) in monogamous social groups do not experience reproductive suppression, but those living in communally breeding groups with high ...
Some animals starve to death shortly after birthing their young while others are eaten by their own young -- but these mothers make the ultimate sacrifice. Click through for 10 animal mothers that ...
The term foetal death applies variably in different countries and contexts, sometimes incorporating weight, and gestational age from 16 weeks in Norway, 20 weeks in the US and Australia, 24 weeks in the UK to 26 weeks in Italy and Spain. [32] [33] [34] A foetus that died before birth after this gestational age may be referred to as a stillbirth ...