Every living organism that inhabits our planet has an important function in its ecosystem. With our collection of books on animals in PDF format, we aim to highlight the relevance of the Kingdom Animalia in the biosphere.
Could we survive without them? The answer is a definite no. You will find in our animal books that human life would be in grave danger if some species were to disappear.
Animals are essential living beings to maintain the perfect ecological balance. The Kingdom Animalia forms a quite heterogeneous group where we humans also enter.
There are three kinds of animals that especially support human life: scavengers (they eat decomposing bodies avoiding the excessive propagation of harmful microorganisms), the most important of which are hyenas and vultures.
The decomposers (transform organic energy into inorganic), among them are earthworms. And pollinators (pollinate plants, making possible the production of seeds and fruits), of which the bee stands out as the most important.
The classification of animals is very broad, there are three main categories: according to their structure, their way of feeding and reproducing. A dog, for example, is a vertebrate animal (structure), omnivorous (feeding) and viviparous (reproduction).
In the history of mankind, there is a historical period (the Neolithic) when humans became more sedentary and needed to domesticate animals for food, transportation and commercial purposes.
Since then, in a slow process, animal husbandry developed and animals began to fulfill various functions. Today, they are a source of food, serve as companions and are used to produce textiles, as well as oils and skins. In addition, thousands of vaccines and medicines are tested on animals before being applied to humans.
These last functions have been condemned by organizations that fight for the conservation of the environment, which includes the protection of animals. It is common knowledge that any modification of the food chains in the Animalia Kingdom endangers the survival.
Nowadays, domestic animals such as cats and dogs are excellent companions and are recommended as therapeutic treatment for important physical and mental health conditions. They are a great help in rehabilitation processes, such as those for depression, anxiety and some neurological conditions like autism and Alzheimer’s disease.
Don’t miss our collections of animal books, available in this section.
1) Animal Anatomy Books
Animal anatomy or also known as veterinary anatomy is the science whose objective is to make a description of the shape and structure of the organisms that make up an animal species.
The anatomical exploration of animals is initially based on the observation of the structures that compose it and that classify it as a living being. The veterinary anatomical investigation of the different animal species to know their differences and similarities is known as Comparative anatomy.
The purpose of carrying out these studies arises from human curiosity to investigate the progressive aspects of the different species. At present, research and practices continue to be carried out in relation to the subject, having a representation of the organs and everything that make up the various animal species.
2) Animal Husbandry Books
Animal husbandry is an economic activity of very ancient origin that consists of raising animals for their use. Depending on the livestock species, various derived products are obtained, such as meat, milk, eggs, hides, wool and honey, among others.
The most important livestock species worldwide are cattle, sheep and pigs. However, in some regions of the world, other types of livestock are more important, such as goats and horses, as well as cuniculture, poultry and beekeeping.
Animal husbandry is closely related to agriculture, since on a farm the two can be interrelated. In these cases, the livestock provide the manure, which is used as fertilizer, and the crops provide the feed for the animals.
3) Cats Books
Cats are amazing animals. They have been the only members of the felidae family that have been willing to coexist with humans, thus building a unique relationship among the animal kingdom. We think we have domesticated them, but in reality the friendship that unites us is maintained because we accept their rules in exchange for the great affection they give us.
Cats belong to the Felis catus species, that is, they are felids, just like lions, tigers, cougars, among others. The body of these animals is made by and for hunting, so they are carnivores, which means that in order to survive they must hunt their prey and feed on them.
Already the ancient Egyptians had a penchant for cats, as they were the ones who first domesticated them. It was a revered animal and was part of the daily life of the ruling class and, in fact, there were funerals in its honor.
4) Dog Books
The dog is a mammal and quadruped animal that was domesticated about 10,000 years ago and currently lives with humans as a pet. Its scientific name is Canis lupus familiaris.
The domestic dog is a subspecies of the wolf, it is believed that it gradually came to live in places where there were human settlements, this made it get used to the presence of humans and paved the way for its domestication; at first it was used as a hunting assistant or to carry out defense and guarding tasks, later it would be used for herding functions; nowadays it is highly valued as a companion animal or pet.
Its adaptation to the human environment has led to a notable change in its eating habits, nowadays it can be considered as an omnivorous animal, in fact the industrial food elaborated for these animals, has in its composition, besides the protein contributions required by the animal, other components such as cereals and vegetables.
5) Endangered Animals Books
According to data from the International Union for Conservation of Nature, the international organization with the greatest authority on the problem, approximately 5,200 species of animals are currently in danger of extinction. Furthermore, in a breakdown by class, 11% of birds, 20% of reptiles, 34% of fish and 25% of amphibians and mammals are in danger of extinction.
There are many reasons why a species may be on the verge of extinction. The reasons may be highly specific to each species, but in general terms, among the greatest threats are the destruction and fragmentation of their habitats; climate change; illegal hunting and trafficking; and the introduction of exotic species.
Preventing a species from disappearing involves the implementation of a large number of resources and concrete actions. Some of these would be to avoid the fragmentation of their habitats, for example deforestation; to prosecute and severely
6) Horses Books
A horse is a mammal animal that is part of the equidae family. It is a perissodactyl: an ungulate being (it uses the end of its toes for support and walking) whose limbs have an odd number of toes ending in hooves and whose central toe is more developed than the rest.
Their diet is based on plants such as grass or hay, but some fruits and vegetables such as apples and carrots can also be included in their food group.
Horses can be domesticated, those that humans have been able to tame for different purposes are very useful in animal husbandry or for sport, as well as in psychological and physical rehabilitation therapies (equine therapy) and for transportation in certain rural contexts. At the same time, there are horses that live in the wild.
7) Veterinary Medicine Books
Veterinary Medicine is the medical discipline that is dedicated to the prevention, diagnosis, treatment and cure of diseases and conditions that affect all animals, whether domestic, wild or for production.
Veterinary medicine, like human medicine, has a very long history in which animals are the protagonists, because they are the ones who have great difficulty to show humans if they have any pain, this is the main reason for the creation of veterinary medicine, in addition to the fact that animals have great importance in the lives of humans.
Thanks to technological advances, over the years, veterinary medicine has been able to strengthen and provide animals affected by any disease, the possibility of being cured in a faster and more effective way.
8) Zoology Books
The term “zoology” comes from the Greek and translates as “science or study of animals”. The main objective of zoology is the examination of the morphological and anatomical description of the different animal species: their reproduction, development, behavior and distribution. Aristotle was the first zoologist since he devoted himself to taxonomy, which is, to the description and cataloguing of numerous species.
Zoologists are the specialists in charge of the biological taxonomy of all animal species, both living and dead. Some zoologists work in museums and are responsible for the maintenance and description of zoological collections.
Zoology has many subspecialties that deal with different groups, such as arachnology (spiders), herpetology (reptiles and amphibians), ichthyology (fish), ornithology (birds), malacology (mollusks),…
So, here ends our selection of free books about Animals. We hope you liked it and that you already have your next book!
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