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Dogs commonly give birth in a whelping box, a simple box or pen provided to the dam to help shelter and contain the puppies. A person who intentionally mates dogs to produce puppies is referred to as a dog breeder. Line breeding is the planned breeding of dogs with their relatives. This is done to strengthen the appearance of specific desired ...
Neoteny and reduction in skull size – grey wolf and chihuahua skulls. When the role of dogs expanded from just being working dogs to also being companions, humans started selective breeding dogs for morphological neoteny, and this selective breeding for "neoteny or paedomorphism" "strengthened the human-canine bond."
Animal breeding as an ancient human occupation, can be traced back to domestication and dates back to at least 14 thousand yrs ago. The modern processes of purebred breeding evolved between the late 18th century and the late 20th century, influenced significantly by advancements and increased understanding of genetics and eugenics.
A dog's cranium is 15% smaller than an equally heavy wolf's, and the dog is less aggressive and more playful. Other species pairs show similar differences. Bonobos , like chimpanzees , are a close genetic cousin to humans, but unlike the chimpanzees, bonobos are not aggressive and do not participate in lethal inter-group aggression or kill ...
In this pedigree chart, G is the progeny of C and F, and C is the biological uncle of F. To find the coefficient of inbreeding of G, first locate a loop that leads from G to the common ancestor through one parent and back down to the other parent without going through the same individual twice. There are only two such loops in this chart, as ...
German dog lovers are up in arms over a draft law from the German Agricultural Ministry, which might ban breeding dogs with "skeletal anomalies." One breed in particular has Germans concerned ...
A study of dog remains indicates that these were selectively bred to be either as sled dogs or as hunting dogs, which implies that a sled dog standard and a hunting dog standard existed at that time. The optimal maximum size for a sled dog is 20–25 kg based on thermo-regulation, and the ancient sled dogs were between 16 and 25 kg.
An 11-year-old's Christmas came early with a special surprise that left him absolutely over the moon. Kellan couldn't believe his eyes when he spotted a tail-wagging puppy on the other side of his ...