I agree with Sheila, Mustelid tibiae tend to be roundish, less sharply defined. Compared to them, cat is slightly more "dog-like". Excluding [the relatively large] cat is the a major step in the right direction. The real problem will be a "family matter". Without being preachy or sardonic: martins are swallows of the genera Progne, Delichon, Riparia etc. The name is supposed to derive from their migration time around St. Martin's Day. But do not worry, there are more words that I misspell myself. With kind regards: Laszlo