They have also been known to eat aquatic plants and to prey on other small mammals, such as muskrats or rabbits.They have a very high metabolism, so they need to eat frequently. What do otters eat? River otters eat mostly frogs, crabs, crayfish, fish and mollusks. Meat based diets have been used in most institutions for growth, maintenance, and breeding of ASC otters. Incomplete webbing between the toes gives them a great deal of manual dexterity. Small-Clawed Otters (Aonyx cinereus) DIET In the Wild High metabolic rate, rapid digestion, 40-60% time in wild spent foraging/feeding In wild eat 20% of body weight per day in meals of ~500g In wild eat wide variety of food, majoring on crustaceans and molluscs Recommended Diet 20% freshwater fish, preferably fresh not frozen To sustain a captive population of Asian small-clawed otters, the nutritional needs of the species must be met. Neat Facts. Diet. Snapping turtles, coyotes, bobcats, and foxes may occasionally prey upon young otters, and rarely, adults. The undigestible scales and bones harmlessly pass through their digestive system and are deposited as scat. (River otters eat a less-impressive, but still-respectable 15-20% of their body weight.) River otters and giant otters hunt by using their whiskers to detect movements of prey in murky water. Asian small-clawed otters use their forepaws rather than their mouth to locate and capture food items. As is the case with many species, Eurasian otters tend to live longer in captivity than in the wild. In the wild the otters eat primarily crustaceans and mollusks but will also eat fish, insects, amphibians and reptiles. During the spring months amphibians form a large part of their diet. 5. Otter live to around 12 years old in the wild, and longer in captivity. There are a variety of meat products upon which to base the diet. 4. Predators: The river otter has few natural predators because of its strength, sharp teeth, aggressiveness when attacked, and aquatic habits. frozen diets) have been used to maintain ASC otters in captivity (Baer, et al 1994). River otters eat a variety of aquatic wildlife, such as fish, crayfish, crabs, frogs, birds’ eggs, birds and reptiles such as turtles. River otters may live 20 years in captivity; few survive more than 10 years in the wild. Otters recline to eat. Husbandry, or the care and management of otters in captivity, has improved gradually over the last two decades. Young otters will often follow their mother about on land or while swimming in single file. Otters tend to eat up small fish in entirety from head to tail. Table 1.5 briefly describes the nutrient content of This species is a member of the otter subfamily (Lutrinae) of the weasel family (Mustelidae), and is the smallest otter species in the world. 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