"Look out," Charlie advised, tugging hard on the leash he had in his hands. A small, furry yet strangely strong creature on the end of it was sniffing around the edge of the textbook in the grass by Anthony's side. A little Niffler. It's long snout teased the cover open slightly before it lost interest and turned its attention to Anthony.
"You're not wearing any gold are you?" Charlie asked with just a hint of worry in his voice, "Only this one'll bite you to get it if he smells you." He tugged the leash again and the Niffler left two little gouges in the grass as he tried desperately to remain where it was to continue its investigation.