Otter scat is usually greenish black, contains fish scales, and smells like musk mixed with fish. Otter often use latrines where scat is concentrated. You may notice a thick, yellowish deposit near latrines. Also, look for slides on steep, snow-covered banks. Otter slides are narrower than beaver slides, but aren't common unless an area is heavily used by otter.
Lures Use sweet lures for raccoon and castor lures for beaver.
Do not use lures that contain fish oils, which will readily attract otter. Trap placement Where you place a trap can greatly affect what type of animal is likely to be caught. When placing any kind of trap along a beaver pond, avoid putting sets near the dam crossover or near the inlet of the pond. Although these are productive areas for beaver, they are also excellent travel lanes for otter. Instead, focus your trap setting away from the pond where beaver leave the water in search of food.