Riddle 1: I wag my tail when I'm happy and chase my ball all day — who am I?
Riddle 2: I say "woof", I love a bone, and I lick your face — what am I?
Answers: 1) A dog. 2) A dog.
How to solve: 1) Read the line slowly. 2) Think about what animal does those things (tail wagging, saying "woof", liking bones).