The Use of tools (工具的使用) Animals’ Minds (动物的心智) Providing Shelter (提供遮蔽) Learning and Play (学习与游戏) Animal Homes and Communities (动物的居所与群落) Group Living (群居) Animal Migration (动物迁徙) Migration Birds Know No Boundaries (鸟类迁徙无边界) Why Birds Migrate (为什么鸟类迁徙) Birds’ Sense of Direction (鸟类的方向感) Monarch Butterflies (帝王蝶) Green Sea Turtle (绿蠵龟) Salmon (鲑鱼) Hibernation (冬眠) Dormancy (休眠) Other Kinds of Dormancy (其它种类的休眠) Hyena (鬣狗/土狼) Koala (无尾熊) Vicuna & Alpaca (The Camel Family) (羊驼-骆驼科) Desert Animals (沙漠动物) How A Cat Lands On Its Feet (猫如何由高处着地) How Cats See In The Dark (猫如何在黑暗中看见东西)
Spider (蜘蛛) The Spider’s Body (蜘蛛的身体) The Spider’s Silk (蜘蛛丝) How Spiders Use Silk (蜘蛛如何利用丝) Hunting Spiders (猎食型蜘蛛) Web-Spinning Spiders (结网型蜘蛛) Bloodhound (猎犬) Drug Dogs (缉毒犬) Chipmunk (花栗鼠) Ornithology (鸟类学) Birds’ Introduction (鸟类的介绍) Why Birds Roost Communally (鸟类为何群居) Building A Nest (筑巢) Laying and Hatching Eggs (生蛋及孵蛋) Bills (鸟喙) Preening (鸟用嘴整理羽毛) Legs and Feet (鸟的腿和脚) Extinct Birds (已绝种的鸟类) Hummingbird (蜂鸟) Crows (乌鸦)