Circus Days Again by Enid Blyton

Jimmy Brown and his best friend, Lotta the acrobatic rider, are gearing up for another spectacular season traveling with Mr. Galliano’s famous circus. But life behind the scenes is never as simple as it looks from the audience! When Mr. Galliano has to leave the camp for a while, a strict, unkind temporary ringmaster named Mr. Carlile takes over, and he doesn't understand how to treat the circus animals with kindness. The happy, family atmosphere of the camp is quickly turned upside down. With a troupe of mischievous monkeys causing absolute chaos, a beloved performing elephant refusing to do his tricks, and tensions rising among the performers, the circus is headed for disaster. Jimmy must rely on his extraordinary, gentle way with animals to soothe the restless beasts, protect his friends, and save the show before it's too late!