Other furs traded included deer, marten, raccoon, fox, otter, and muskrat. They carried an aircraft catapult and two Supermarine Sea Otter or Walrus seaplanes. Other inedibles were the otter and the badger. The extinct Japanese river otter is usually considered a subspecies. Beginning in 1792, Gray established trade in sea otter pelts. The album features production from Paper Tiger, MK Larada, Lazerbeak, Cecil Otter and Big Jess. Stony Man , Hawksbill Mountain , Apple Orchard Mountain and Peaks of Otter . Others have suggested that the photograph depicts an otter or a swan. An adult North American river otter can weigh between . Fur "turbans" made from soft animal fur (most often otter) were also popular. Threats to North American river otter populations in North America vary regionally. The North American river otter is sexually dimorphic. An adult North American river otter has a total of 36 teeth. The smell and hearing abilities of the North American river otter are acute. Delayed implantation distinguishes the species from the European otter, which lacks this feature.