Eaton Canyon Nature Center Associates
The Nature Center
Tours, Trails & Meetings
Be Your Own Tour Guide
Tours, Walks, and Hikes
Organizations that hold meetings
at Eaton Canyon Nature Center
Agents of Discovery - Eaton Canyon Mission
Wonders of Wildlife (WOW) Mission Conservation
'How to draw a ...'
Miscellaneous Activity Sheets
Diane Lang's Activity Sheets
Eaton Canyon History
Glossary of Terms
Nature in a Box
School Bus Grants
Characteristics of Animals
Characteristics of All Fish
Their skin is generally covered with scales.
Their limbs are modified into fins for swimming.
Characteristics of All Amphibians
Their skin is usually smooth and lacks scales, hair, and feathers. They are dependent upon moisture and subject to
; their skin must remain moist to aid in breathing.
They have three-chambered hearts.
They lack claws on their toes.
Characteristics of All Reptiles
Their skin has scales, but no hair or feathers.
They have three-chambered hearts (except for alligators and crocodiles, which have four-chambered hearts).
They have claws on their toes (except those which do not have legs, such as legless lizards).
They are the first animals, in evolution, to develop the
egg. This allows reptiles to lay eggs on land.
Characteristics of All Birds
Their skin is covered with feathers.
They have four-chambered hearts.
Their bones are lightweight and usually hollow.
Their forelimbs are modified as wings.
They lay eggs.
Characteristics of All Mammals
They have hair, which varies greatly among species.
Most have sudoriferus (sweat) glands.
They have mammary (milk-secreting) glands.
They have sebaceous (fat-secreting) glands.
They have heterodont dentition (different types of teeth).