Alphabet Animals: A Slide-and-Peek Adventure (Slide-And-Peek Book)

Is it possible that you are combining elements of two (or more) books? I did find a book called Alphabet Adventure that has a similar style to what you're describing, and it seems like go on some kind of journey, but the letters aren't in the shape of animals. https://www.amazon.com/Alphabet-Adventure-Audrey-Wood/dp/043908069X I also came across Alphabet Animals, but it doesn't seem to have any kind of adventure plot. https://www.amazon.com/Alphabet-Animals-Slide-Peek-Adventure/dp/1416950451