Deadly Eyes

Deadly Eyes is a movie starring Sam Groom, Sara Botsford, and Scatman Crothers. Contaminated grain breeds overgrown, killer rats in this Golden Harvest production. Dachshunds were dressed up as rats for the special effects.
Corn grain contaminated with steroids produces large rats the size of small dogs who begin feeding on the residents of Toronto. Paul, a college basketball coach, teams up with Kelly, a local health inspector, to uncover the source of the mysterious rat attacks and they eventually try to prevent the opening of a new subway line as well as find the mutant rats nest quickly, or there will be a huge massacre of the entire city!