Keep in mind that every crocodilian has its own specific needs based on the size and species, but here are some general rules to follow when maintaining and housing your crocodilian. First is housing and habitat, you will want to provide your crocodilian with proper water conditions, there are countless filters out there depending on the size of the enclosure for keeping the water as clear as possible which is obviously ideal as it will help to prevent any bacteria from forming and the water moving to prevent stagnancy. As a substrate you can use gravel or stone, but if your filter is not strong enough, then a lot of bacteria may settle into it. Making sure to maintain proper water temperature is also important to keep your crocodilian comfortable and healthy so be sure to monitor temperatures, there are many types of water heaters that you may use. Make sure you create a place large enough for your crocodilian to fully bask and move around comfortably. Keeping some vegatation in the water to keep both a natural look and provide a place to hide and plants can also add several health benefits. At the very least you should completely drain and clean out the water area every few months and clean the filter regularly. The water level should have a deeper zone that is a minimum of three to four times the diameter of the crocodilian at the widest part of its body. You should maintain the recommended proper temperature on both the cool side and warm side of the enclosure, you should keep a timed cycle of 12 hours for the basking light during the day and a nighttime bulb for the remaining 12 hours at night, the nighttime bulbs purpose is to ensure that the enclosure does not drop below whatever the lowest recommended temperature may be. If given the opportunity, it is a good idea to take your reptile outside whenever possible to expose them to as much natural light that you can. For beginners, we do not recommend intermixing different species as not only could they not get along, but they may have different requirements. If you do manage to house several of the same species in one large enclosure then feeding them separately could be a benefit for each of them as they could become territorial, fight over food, or one could outcompete and take away food from the other(s). A good rule of thumb, though this does not apply to all species, is to not feed your crocodilian anything larger than the size of its head. We suggest that if you do plan to house several crocodilians together that you do quarantine any new specimens for at least a month or until you get them checked out by a vet to ensure that both are healthy enough to be around others. Upon bringing home any new animal they will need to adapt to their new environment and will be under some stress so if your crocodilian does not eat for the first week or so do not panic as this can be normal, but if this behavior continues and they do not eat then we would recommend getting them checked for possible medical issues. Lastly, do not forget to ensure the access point to your enclosure is well secured and that they cannot climb over it.
Impaction is fairly common in reptiles and can sometimes be passed through. However, if it is too much for the reptile, this can lead to many other internal problems. You can soak them in warm water to loosen it, or some medicines can be prescribed to be injected through the mouth to loosen up what is inside. Sometimes bringing them outside and exposing them to direct natural sunlight can cause them to release. If it hardens then surgery will need to be performed to remove the impaction. Breeding can lead to injuries on many reptiles as well. A lot of biting occurs, and can sometimes draw blood. The best thing to do is to separate the animals and wash the injury with warm water and use a light disinfectant to prevent bacteria from spreading. Do this every day until it heals. Eggs can also lead to some serious issues. Upon laying eggs, it will drain a lot of calcium in addition, it induces a lot of stress on the animal. Some eggs can become hardened and impacted as well, this will require surgery to remove. Mouth rot is another disease that can affect snakes. When a reptile is stressed, its immune system becomes weak and unable to keep regular bacteria in their mouths in check. This can be observable by a loss of appetite, inflamed mouth tissues, pus, dead tissue in the mouth, or drainage from the nose and mouth. It can also be caused by oral abrasions caused by the substrate or live prey. It can be treated by removing the tissue and simply maintaining their environment properly, flush their mouth antiseptic solution or topical antibiotic daily as well as opening and draining lesions. Reptile mites do great damage to reptiles, they breed quickly, spread fast, and can dehydrate and stress out a reptile to death all too fast. Immediate quarantine of the animal and its cage must occur as well as checking all nearby walls, accessories, and other cages, disinfect everything and do not bring either the reptile or its cage anywhere near any other animal. They can be treated by soaking your reptile in water and disinfecting its cage daily to drown the mites. There are certain medicines that can be provided to kill remaining mites, as well as certain sprays you can use on the lizard and its enclosure that should kill any that are left. All reptiles should be handled at least a few times a week and at most every day for some period of time so that they get accustomed to people and do not feel threatened (with the exception of snakes who should not be handled for at least 48 hours after being fed). All reptiles should be handled in a manner in which the would be oriented normally in the wild. When being transported, the animal should have enough room to fully extend themselves and should be placed with a cool, wet paper towel underneath them.