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The most common form of sterilization in dogs and cats is surgical, spaying in females and castration in males. Non-surgical fertility control can either result in sterilization or temporary contraception and could offer a cheaper way to keep wild dog and cat populations under control. As of 2019, only contraceptives are commercially available.
Heteropaternal superfecundation is common in animals such as cats and dogs. Stray dogs can produce litters in which every puppy has a different sire. Though rare in humans, cases have been documented. In one study on humans, the frequency was 2.4% among dizygotic twins whose parents had been involved in paternity suits. [6]
Superfetation (also spelled superfoetation – see fetus) is the simultaneous occurrence of more than one stage of developing offspring in the same animal. [1] [2] [3]In mammals, it manifests as the formation of an embryo from a subsequent menstrual cycle, while another embryo or fetus is already present in the uterus.
Midwife Gunner also showed just how intuitive dogs and cats can be. He clearly knew that his feline friend was expecting kittens, and he switched right into Dad mode once the babies arrived.
A struggling couple in Shenzhen, China, got slammed online after asking for donations to pay for medical bills after giving birth to quadruplets.The parents already had two daughters, making their ...
A Guide Dogs mother has given birth to a litter of nine puppies just in time for Christmas. The four-year-old golden retriever named Puds, a breeding dog for the charity, gave birth to five girls ...
A litter is the live birth of multiple offspring at one time in animals from the same mother and usually from one set of parents, particularly from three to eight offspring. The word is most often used for the offspring of mammals , but can be used for any animal that gives birth to multiple young.
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