Clean water needs to be provided at all times for drinking. Raw meat, bones and whole or partial carcasses can be feed periodically. Wolves in captivity can be fed a high quality dry dog food diet. They will also need to have access to clean cool drinking water at all times.

Make sure the water level is safe for small pups if any are present. You can also provide a shallow pond or pool for them to cool down in when needed. Wolves do well in the summer heat if shade is provided for each wolf. If you are expecting pups, you need to keep the shelter area at 50 degree Fahrenheit or above for the pups. Warm climate species of wolves will whelp, give birth, during the winter. Make sure the heat source is secure and the wolf cannot knock it over or lay too close to it and get burnt. The can be accomplished by installing a space heater, heat pads, or heat lamps. Warmer climate species will need supplemental heat when the temperatures go below 40 degrees Fahrenheit. You can use a heated water bowl to provide clean drinking water at all times. Straw should be spread on the floor of the shelter to provide a dry bedding that can be easily cleaned. A shelter area should be provided for each wolf. Species of wolves which are naturally found in cold climate will do fine in a cold climate area but will need access to a dry sheltered area that will protect them from rain, wind, sun and extreme cold. They will try to dig out so you will need to lay wire horizontally about 1 foot underground and 3 feet out to prevent them from escaping. You will need to have an enclosed top or a overhanging climb barrier that is a chain-linked section that is about 3 feet wide and is set at an inward and upward angle of 40 degree. The wolf is a climber and can climb a chain-linked fence. Also wolves will try to climb and jump in corners. A cage with corners will give a spot for one wolf to aggressively corner another wolf. Most imported specimens are about 10cm/4 long. These fish are said to reach 45cm/18 in the wild, but I feel that 20-25cm/8-10 in captivity is quite an achievement for even the most dedicated fishkeeper. The best cage design for wolves is one that is circular. A relative newcomer to the hobby is the Zebra Spiny eel, Macrognathus zebrinus, formerly of the genus Mastacembelus.

Wolf eel diet in captivity