In the film , The Great Mouse Detective Basil and Dawson take Toby , Sherlock Holmes 's pet Beagle to track Fidget 's scent .
Basil and Dawson take Toby , Sherlock Holmes 's pet beagle , to track Fidget 's scent , where they locate him in a toyshop stealing clockwork mechanisms and toy soldiers ' uniforms .
The Great Mouse Detective