The mammals are the class of vertebrate animals characterized by the presence of mammary glands, which in females produce milk for the nourishment of young; the presence of hair or fur; and endothermic or "warm-blooded" bodies. The brain regulates endothermic and circulatory systems, including a four-chambered heart. Mammals encompass some 5,500 species (including Humans), distributed in about 1,200 genera, 152 families and up to 46 orders, though this varies with the classification scheme.
Phylogenetically, Mammalia is defined as all descendants of the most recent common ancestor of monotremes (e.g., echidnas and platypuses) and therian mammals (marsupials and placentals).

Animal Bite - Advice on treatment of dog and cat bites, for emergency medical personnel.
Meta Description: [ Emergency: Dermatology: Bites Animal ]
Animal Bites - HealthWorld Online - Preventive measures and treatments. From the American Institute of Preventive Medicine.
Meta Description: [ HealthWorld Online is the Internet's leading resource on alternative medicine, wellness, and mind/body health, featuring the Wellness Inventory whole person assessment program, the Healthy Shopping Network, Find a Practitioner Network, Healthy Update e-newsletter, and thousands of expert articles... ]
eMedicine Health - Animal Bites - Overview of symptoms and treatment of bites from dogs, cats, and wild mammals.
Meta Description: [ Many different types of animals ranging from dogs and cats to hamsters, raccoons, ferrets, and squirrels can bite adults and children. Many times, bites are from the family pet. ]
eMedicine Health - Human Bites - Information on the treatment of human bites.
Meta Description: [ Human bites can be either quite serious or relatively harmless. It is important to know which ones to worry about. Human bites consist of a range of injuries. They include ... ]
Human Bites Versus Dog Bites - Advice for physicians on how to tell the difference, with photos. Images in Clinical Medicine from The New England Journal of Medicine.
Meta Description: [ Images in Clinical Medicine from The New England Journal of Medicine -- Human Bites versus Dog Bites ]
National Dog Bite Prevention Week - US Centers for Disease Control information about avoiding bite-related injuries.
500
Nonfatal Dog Bite-Related Injuries Treated in Hospital Emergency Departments - United States, 2001 - Review of the incidence of injuries, with recommendations on prevention.
| Sonar Victims - USA | |
| Next Video | |