It was a sunny day in the city, and uppercase letters ABC and D were excited to visit the zoo. They had heard all about the amazing animals that lived there, and they couldn't wait to see them up close.

As they walked through the gates, ABC and D spotted a sign that said, "Look for animals that start with our sounds!" The friends were thrilled and immediately began their search, with their baby letters lowercase a and d following close behind.

First, they came across a big, roaring lion. "L, L, L!" said ABC, as they watched the magnificent animal. Then, they saw a playful monkey swinging from the trees. "M, M, M!" they exclaimed, clapping their hands with delight.

As they continued their adventure, ABC and D discovered all kinds of fascinating creatures, from a slithering snake to a buzzing bee. Each time, they would call out the letter that matched the animal's sound, with a and d happily joining in.

By the end of the day, the friends had seen so many incredible animals, and they couldn't wait to tell everyone about their exciting zoo adventure. As they headed home, ABC, D, a, and d knew that they had had a wonderful time learning and exploring together.