Animal
Animals are a major group of organisms, classified as the kingdom Animalia or Metazoa. In general, they are multicellular, capable of locomotion and responsive to their environment, and feed by consuming other organisms. Animals have several characteristics that set them apart from other living things.
There are seven major levels of classification: Kingdom, Phylum, Class, Order, Family, Genus, and Species. The two main kingdoms we think about are plants and animals. Scientists also list four other kingdoms including bacteria, archaebacteria, fungi, and protozoa.
Fish. ... Fish are gill-bearing aquatic craniate animals that lack limbs with digits. They form a sister group to the tunicates, together forming the olfactory. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups.


A pet, or companion animal, is an animal kept primarily for a person's company or entertainment rather than as a working animal, livestock, or a laboratory animal. ... Two of the most popular pets are dogs and cats; the technical term for a cat lover is an ailurophile and a dog lover a cynophile.
The history of pets is intertwined with the process of animal domestication, and it is likely that the dog, as the first domesticated species, was also the first pet. Perhaps the initial steps toward domestication were taken largely through the widespread human practice of making pets of captured young wild animals.
Pets are part of our everyday lives and part of our families. They provide us with companionship but also with emotional support, reduce our stress levels, sense of loneliness and help us to increase our social activities and add to a child's self-esteem and positive emotional development.



We share 95% of our genes with a mouse, making them an effective model for the human body. Animals and humans are very similar; we have the same organ systems performing the same tasks in more or less the same way. Animals suffer from similar diseases to humans including cancers, TB, flu, and asthma.
Pets, especially dogs and cats can reduce stress, anxiety, and depression, ease loneliness, encourage exercise and playfulness, and even improve your cardiovascular health. Caring for an animal can help children grow up more secure and active. Pets also provide valuable companionship for older adults.
The Benefits of Pets for Human Health. Animals play an important role in many people's lives. ... Some research studies have found that people who have a pet have healthier hearts, stay home sick less often, make fewer visits to the doctor, get more exercise, and are less depressed.

Here are ways you can make a difference -
  • Adopt. From wild animals to wild places, there's an option for everyone. ...
  • Volunteer. If you don't have money to give, donate your time. ...
  • Visit. Zoos, aquariums, national parks, and wildlife refuges are all home to wild animals. ...
  • Donate. ...
  • Speak Up. ...
  • Buy Responsibly. ...
  • Pitch In. ...
Recycle.