Domesticated animals

In Short

Nathaniel Southgate Shaler explores the deep history, science, and ethics of human relationships with domesticated animals. Beginning with ancient subjugation and moving species by species—dogs, horses, livestock, birds, and useful insects—he traces how human selection replaced natural selection. Shaler demonstrates how constant association elevated animal intelligence, particularly in dogs and horses, while warning that modern breeding for purely aesthetic traits threatens to degrade their mental capacities. Concluding with an earnest argument for animal rights and ecological stewardship, the book calls on humanity to assume a compassionate responsibility for the natural world it has irrevocably altered.

The Story

The work opens by examining the origin of human companionship with beasts, starting with the dog. Derived from ancient, extinct wild canine stock, the primitive dog lacked innate intelligence or sympathy for humanity. However, through thousands of years of human association and continuous selection for cooperative traits, dogs underwent a profound psychological evolution, absorbing human-like emotional capacity and linguistic comprehension. Shaler contrasts this with cats, noting the dog's unique elevation through shared work and life.

Turning to beasts of burden, Shaler details the history of the horse, tracing its evolutionary development in North America before its extinction there and eventual domestication in Central Asia. He emphasizes the immense physical and mental care required to maintain horses, demonstrating how artificial practices like daily grooming actively alter their nervous tone and physical endurance. He contrasts the horse's specialized demands with other working animals, like cattle, which were among the earliest captives taken from the wild by ancient hunters, leading directly to nomadic human societies.

The survey broadens to encompass the wider menagerie of domestic species. Shaler analyzes the domesticability of various horned cattle and buffaloes, noting why certain species yield to the yoke while others, like the African buffalo or American bison, remain obstinately wild. He recounts the ancient history of the giant, hair-covered mammoth hunted by early humans, and examines the economic transformation of the pig—a creature whose native mental acuity matches or exceeds most mammals, yet suffers mental degradation when confined to modern pens.

In birds, Shaler highlights the dramatic changes wrought by human selection. Barnyard poultry lost much of their extreme wild combative instinct, while pigeons became the primary example of selective breeding carried out for purely aesthetic pleasure rather than utility. Expanding beyond vertebrates, he evaluates useful insects like honey-bees and silkworms, concluding that while bees adapt remarkably to human hives, their social instincts remain fixed and devoid of personal sympathy for man.

Finally, the narrative culminates in a moral and ecological inquiry into the rights of animals and humanity’s responsibility toward nature. Shaler defends scientific experimentation like vivisection for medical advancement, yet sharply criticizes the ethical degradation caused by breeding animals solely for artificial visual standards. He closes with a sweeping ecological warning: human progress inherently shatters the ancient natural order, placing an absolute moral duty on civilized society to act as wise stewards and minimize the destruction of animal life.

How It Unfolds

The canine bond Humanity takes in primitive wild canines, gradually transforming their ferocious nature through centuries of careful selection into remarkable mental sympathy and understanding of human speech.

Power of the horse Originating in prehistoric North America before spreading to Asia, the horse becomes an indispensable partner in war and labor, requiring meticulous daily grooming and feeding to thrive in its unnatural state.

Subjugation of the herd Ancient hunters capture wild cattle, founding nomadic pastoral cultures and learning why certain species like Asian buffaloes accept the yoke while American bisons refuse human subordination.

Evolution of the pen Through intense selective breeding, farmers rapidly alter the physical shape of the pig, while inadvertently obscuring the animal's remarkable native intelligence through close confinement.

Fancies of the air Breeders in ancient India initiate thousands of years of pigeon breeding for pure aesthetic gratification, while poultry breeding successfully tempers the fierce fighting instincts of wild cocks.

Limits of the insect Honey-bees and silkworms bind their fortunes to human civilization, showing complex social instincts yet remaining mentally distant and incapable of individual affection for their keepers.

Ethics of stewardship Humanity acknowledges its profound impact on the natural order, balancing the necessity of scientific inquiry with a moral obligation to protect animals from degrading breeding practices and unnecessary suffering.

The People

Nathaniel Southgate Shaler The author and naturalist who acts as the guide throughout the text. He seeks to uncover the evolutionary history and psychological development of domestic species, observing animals in caves, farms, and show rings to argue for a more intelligent and humane partnership between humans and beasts.

The Dog Fancier The modern breeder who selects animals based on artificial standards of form and color rather than mental utility. Driven by cosmetic ideals, this figure inadvertently degrades the intelligence of purebred dogs compared to ordinary, working mongrels.

The Mountain Trainer A Virginia peasant who trains "learned pigs" for public exhibition. By selecting animals with wide skulls and broad spaces between their eyes, he demonstrates the impressive, untapped capacity of swine for complex learning.

The Game-Cock A hand-reared bird whose innate combative drive illustrates the primitive mental traits of wild species. Exposed to a diverse barnyard, he uses cunning tactics—such as sheltering between a turkey's legs—to dominate larger foes.

In Its Own Voice

"The same incompatibility which exists between slavery and freedom in our own species in any given territory may be said to hold in the case of captive animals."

Shaler explains why the wild ancestors of most major domesticated mammals have vanished from the earth after mingling with subjugated herds.

"A single animal would furnish more food than scores of the lesser beasts such as the reindeer."

Reflecting on the giant, hair-covered mammoth hunted by early European humans, Shaler notes the immense reward that offset the severe perils of the prehistoric chase.

"To attain his object he has to banish from the soil nearly all the plants which originally belonged upon it, and in their place, with or without intention, he introduces species from other organic provinces."

Addressing the environmental cost of human progress, Shaler describes how agriculture fundamentally disrupts ancient ecological balances.

What It's Really About

The book explores the reciprocal evolution between humanity and the animal kingdom. Shaler argues that domestication is not merely a story of human dominance, but a shared evolutionary journey where continuous association transferred human-like qualities into animals. Underneath the biological survey lies a critique of modern civilization's relationship with nature. Shaler contends that as animals lose their working utility and are bred for mere ornament or industrial output, humans fail in their role as educators of the lower species. Ultimately, the work asks how civilized society can balance its drive for agricultural mastery with ethical stewardship, asserting that human power over nature carries an undeniable moral obligation to safeguard animal welfare.

Why Read It Today

This work offers a compelling late-nineteenth-century window into evolutionary biology and human-animal ethics, written just as Darwinian theory was reshaping scientific thought. Readers interested in environmental history, animal cognition, and the ethics of animal breeding will find Shaler's perspective surprisingly modern and thoughtful. His prose carries the quiet authority of a naturalist who observes the world through both rigorous science and keen personal observation.

The text is accessible to general readers, though it reflects the formal, measured cadence of Victorian scientific writing. Readers should be prepared for historic period attitudes regarding human racial classifications and early justifications for animal experimentation. Furthermore, the absence of modern genetic terminology means complex inheritance is discussed through practical breeding outcomes rather than molecular science. Despite these era-specific traits, Shaler’s central plea—that humans must treat their animal companions with psychological respect rather than aesthetic vanity—remains a powerful, enduring message that resonates strongly with contemporary readers.

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