"Country Toad and City Frog" is a bilingual English-Spanish children's book. The book teaches the moon phases in an adventure-type storyline. The moon phases change as the book and storyline progress through Country Frog's adventures, which begin in his beloved country environment and progress into a strange city environment where he meets City Frog. The two become friends and stay together in the country at the end. The target age for this book ranges from five to nine years.