Which is stronger!? Set of 4 books [Shark vs. Swordfish] [Cassowary vs. Kangaroo] [Bee vs. Spider] [Bighorn Sheep vs. Bison] Set of 4 books After purchasing new, my child read them and they were stored at home. There are some scratches, stains, and damage on the covers, and some signs of use, but the inside is in good condition and can still be read! Please consider purchasing if you understand that these are used books! Please check the photos for details.