Animal and Bug Costumes for Toddler Boys -- You'll love our selection of Animal and Bug costumes for toddler boys! They will love running and playing in a lion costume, alligator costume, or mouse costume... even a dragon costume! Let your toddler boy learn about all the wild animals, while dressing up as one! From adorable toddler penguin costumes to soft and fluffy rabbit costumes, you're sure to find the right costume for your toddler boys. Great for playtime fun or their first time trick or treating on Halloween!