Ah Choo O/P

I asked my mom if I could have a pet, or even two. But every time I brought one home, my sister went Ah-Choo! When hunting for his new best friend, a boy goes through an alphabetical menagerie of animals. From an antelope, to bobolink birds, to wolves and zebras--and of course, a cat and dog, too--he brings them all home. But each creature just makes his sister go AH-CHOO! Will he ever be able to have the perfect pet?