Some dog breeds (especially the Rough Collie, the Smooth Collie, the Shetland Sheepdog, and the Australian Shepherd), though, have a high incidence of a certain mutation within the MDR1 gene; affected animals are particularly sensitive to the toxic effects of ivermectin.
The Weather Channel Presents: Smooth Jazz II | Mark Collie | The Weather Channel Presents: The Best of Smooth Jazz | Smooth Operator | Rough Collie | Pete Rock & CL Smooth | Border Collie | 102.2 Smooth Radio | ''The Best of Smooth Jazz'' | ''Smooth Jazz II'' | Smooth Collie | Mellon Collie and the Infinite Sadness | Collie | Alexander Collie | 102.2 Smooth FM | Smooth-coated otter | rough collie | Austin Collie | 39/Smooth | WarioWare: Smooth Moves | Vascular smooth muscle | Smooth Talk | Smooth (singer) | Smooth Rock Falls | Smooth Noodle Maps | Smooth Assassin | Smooth | She Wants to Dance with Me (Bordering On A Collie Mix) | Jay Smooth | Collie, Western Australia |