[header] How to treat tapeworms in ferrets [title] Check your ferrets for fleas. [step] Your ferret can get tapeworms by swallowing infected fleas. If your ferret is scratching, comb through his fur with a fine-toothed flea comb, which is available at your local pet store. 
[substeps] Focus on the area between his shoulder blades-this is a popular' flea' spot on ferrets. If you don't see the actual fleas, you may see their residue, which is dark black.