1: "Meet the Top 7 Animals with Short Gestation Periods"

2: "1. Opossum - 12-13 days"

3: "2. Hamster - 15-18 days"

4: "3. Mouse - 19-21 days"

5: "4. Rat - 21-23 days"

6: "5. Rabbit - 28-31 days"

7: "6. Guinea Pig - 59-72 days"

8: "7. Dog - 58-68 days"

9: "Each of these animals have remarkably short gestation periods compared to others in the animal kingdom!"