OpenStax
Open Stax: Anatomy & Physiology: Gonadal and Placental Hormones
Students will identify the most important hormones produced by the testes and ovaries, and learn about the hormones produced by the placenta.
University of California
Ucmp: Placental Mammals
This brief article defines "placental mammals," lists examples of these animals, and describes the characteristics which render their classification.
CK-12 Foundation
Ck 12: Biology: Mammal Classification
[Free Registration/Login may be required to access all resource tools.] Overview of how placental mammals are classified.
CK-12 Foundation
Ck 12: Life Science: Mammal Reproduction
[Free Registration/Login may be required to access all resource tools.] Mammals don't typically lay eggs, but monotremes are the exception. All other mammals give birth to live young and belong to one of two categories, the marsupials...
TED Talks
Ted: Ted Ed: The Three Different Ways Mammals Give Birth
Kate Slabosky details the placental, marsupial, and monotreme methods of giving birth.
CK-12 Foundation
Ck 12: Biology: Evolution of Early Mammals
[Free Registration/Login may be required to access all resource tools.] Overview of the evolution of monotreme, marsupial, and placental mammals.
CK-12 Foundation
Ck 12: Biology: Mammalian Reproduction Study Guide
Review the reproduction of different types of mammals.
San Diego Zoo Global
San Diego Zoo: Mammals
This resource provides extensive information about mammals.
OpenStax
Open Stax: Anatomy & Physiology: An Overview of the Endocrine System
Find out about the types of intercellular communication, their importance, mechanisms, and effects. Then continue on to the next sections to learn about hormones, the different endocrine glands, the organs with secondary endocrine...
The Field Museum
Field Museum: Exhibits: Evolving Planet: Tertiary
Delve into the Tertiary Period portion of the Evolving Planet exhibit, and trace the climate and continental shift during this time. Includes an overview of the period, a collection of images, and a look at the Tertiary Period's...
San Diego Zoo Global
San Diego Zoo: Raccoon
This comprehensive resource from the San Diego Zoo presents extensive information on raccoons including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts.
San Diego Zoo Global
San Diego Zoo: Snow Leopard
This comprehensive resource from the San Diego Zoo presents extensive information on snow leopards including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts. Audio clip...
San Diego Zoo Global
San Diego Zoo: Manatee
This engaging resource from the San Diego Zoo provides extensive information on manatees including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts.
San Diego Zoo Global
San Diego Zoo: Reindeer (Caribou)
The San Diego Zoo provides extensive information on reindeer including details about their habitat, size, diet, family life, physical characteristics, conservation status, and fun facts.
San Diego Zoo Global
San Diego Zoo: Guinea Pig
This engaging resource from the San Diego Zoo provides extensive information on the Guinea Pig including details about its habitat, size, diet, family life, conservation status, and fun facts.
San Diego Zoo Global
San Diego Zoo: Red Panda
This excellent resource from the San Diego Zoo presents extensive information on red pandas including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts.
San Diego Zoo Global
San Diego Zoo: Armadillo
This excellent resource from the San Diego Zoo presents extensive information on red pandas including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts.
San Diego Zoo Global
San Diego Zoo: Kinkajou
The San Diego Zoo provides extensive information on the Kinkajou including details about its habitat, size, diet, family life, conservation status, and fun facts.
San Diego Zoo Global
San Diego Zoo: Fishing Cat
The San Diego Zoo provides extensive information on fishing cats including details about their habitat, size, diet, family life, conservation status, and fun facts.
San Diego Zoo Global
San Diego Zoo: Whale
This comprehensive resource from the San Diego Zoo presents extensive information on whales including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts. Audio clip provided.
San Diego Zoo Global
San Diego Zoo: Hedgehog
This comprehensive resource from the San Diego Zoo presents extensive information on hedgehogs including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts.
San Diego Zoo Global
San Diego Zoo: Camel
This engaging resource from the San Diego Zoo presents extensive information on camels including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts. Audio clip provided.
San Diego Zoo Global
San Diego Zoo: Cheetah
This comprehensive resource from the San Diego Zoo presents extensive information on cheetahs including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts. Audio clip provided.
San Diego Zoo Global
San Diego Zoo: Mandrill
This excellent resource from the San Diego Zoo presents extensive information on mandrills including details about their habitat, physical characteristics, size, diet, family life, conservation status, and fun facts.