Unit 13. Spiders: Spider, spider, on the wall ; An eight-legged creature ; Icky, sticky webs ; Webs, so strong ; A spider's life. Fun with rhymes: Down the spout again. Centipede and Grandmother spider: Introduction ; A mountain full of animals ; The cave of insects ; Grandmother spider.

Unit 14. Bats: The war between birds and mammals ; The birds and mammals get angry ; The war continues ; The end of the war. Incredible flying machine: Bird or mammal ; Flying machine ; Types of bats ; Little brown bats. A bat's life ; Glossary.