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The occurrence of infanticide seems to vary within rodent species between parents. For example, male meadow voles and house mice can be classed as either 'infanticidal' or 'non-infanticidal' depending on their history with other litters they have sired, although studies have shown that females do not discriminate between these classes when ...
This form of infanticide represents a struggle between the sexes, where one sex exploits the other, much to the latter's disadvantage. It is usually the male who benefits from this behavior, though in cases where males play similar roles to females in parental care the victim and perpetrator may be reversed (see Bateman's principle for discussion of this asymmetry).
Children born to enslaved mothers could meet the same fate. The German ethnologist Georg A. Schweinfurth once saw a newborn baby among the ingredients assembled for a meal. He learned that the baby, whose mother was a slave, would soon be "cooked together with the gourds", since capturing slaves was more convenient than raising them from birth ...
Many people liken pet pigs to their pet dogs. Pigs are extremely intelligent, social, love to cuddle, and get along well with other animals. Another cute thing that they do just like dogs do is ...
In birds and mammals altricial species are those whose newly hatched or born young are relatively immobile, lack hair or down, are not able to obtain food on their own, and must be cared for by adults; closed eyes are common, though not ubiquitous. Altricial young are born helpless and require care for a length of time.
Fetal pigs are easy to obtain at a relatively low price because they are by-products of the meat-packing industry. [1] These pigs are not bred and killed for this purpose, but are extracted from the deceased sow's uterus. Fetal pigs not used in classroom dissections are often used in fertilizer or simply discarded. [1]
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