Is Animorphs based on a book?

The book series behind Animorphs

Animorphs: books in order

1. The Invasion (1996)
2. The Visitor (1996)
3. The Encounter (1996)
4. The Message (1996)
5. The Predator (1996)
6. The Capture (1997)
7. The Stranger (1997)
8. The Alien (1997)
9. The Secret (1997)
10. The Android (1997)
11. The Forgotten (1997)
12. The Reaction (1997)
13. The Change (1997)
14. The Unknown (1998)
15. The Escape (1998)
16. The Warning (1998)
17. The Underground (1998)
18. The Departure (1998)
19. The Discovery (1998)
20. The Threat (1998)
21. The Solution (1998)
22. The Pretender
23. The Suspicion (1998)
24. The Extreme (1999)
25. The Attack (1999)
26. The Exposed (1999)
27. The Experiment (1999)
28. The Sickness (1999)
29. The Reunion (1999)
30. The Conspiracy (1999)
31. The Separation (1999)
32. The Illusion (1999)
33. The Prophecy (1999)
34. The Proposal (1999)
35. The Mutation (1999)
36. The Weakness (1999)
37. The Arrival (2000)
38. The Hidden (2000)
39. The Other (2000)
40. The Familiar (2000)
41. The Journey (2000)
42. The Test (2000)
43. The Unexpected (2000)
44. The Revelation (2000)
45. The Deception
46. The Answer (2001)
47. The Beginning (2001)

More screen adaptations of Katherine Applegate's books

• The One and Only Ivan (film, 2020)