Scaly friends count too.
Alligator Snapping Turtle
Macrochelys temminckii
From Southern United States, in rivers and streams that feed into the Gulf of Mexico, from Iowa west into Texas and east into Georgia and northern Florida.1
A friendly guide, not veterinary advice. For anything about your pet's health, ask your vet.
At a glance the quick version
Males can weigh up to 90 kg (200 lb); females up to 28 kg (62 lb).
Carapace length of adults, from 80 to 100 cm (31.5 to 39.3 inches).
Looks how to spot one
carapace and skin
The alligator snapping turtle has a dark brown, heavily armoured shell with three prominent spiky ridges running from front to back, giving it a prehistoric look. Its large, pointed head has a hooked beak and eyes on the sides, unlike other snapping turtles. The long, thick tail is covered in scales, and the skin is brown to greyish with a lighter underside. Hatchlings look like miniature adults.32
Personality what they are like
Alligator snapping turtles are solitary and generally not aggressive unless provoked or handled. They are ambush predators that stay still in the water, using their worm-like tongue to lure prey. They can deliver a powerful bite with their hooked beak, so handling an adult requires great care and experience.45
Daily activity how busy a day looks
These turtles are mostly aquatic and spend most of their time in water. They are most active at night. They need a large, deep water area for swimming and hiding, with structures like submerged logs or root masses. Juveniles may use shallower water with vegetation.12
Grooming and care the hands-on bits
Alligator snapping turtles require a very large, clean aquatic enclosure. Juveniles can be kept temporarily in a breeder tank, but adults need a 700-gallon stock tank or a pond. The water must be filtered and circulated, and kept at a depth at least as long as the turtle's shell. They need a heat source and, in cooler climates, a greenhouse or heated outdoor enclosure. Handling should be minimal and only done by experienced keepers.45
Home where they are happiest
Alligator snapping turtles need a large freshwater habitat with deep water for swimming and hiding, such as a pond or a 700-gallon stock tank. The water should be clean, filtered and circulated. They require a heat source to maintain subtropical temperatures, and in colder regions a greenhouse or heated enclosure is essential. They are solitary and do not need company. In some countries, keeping this species may be regulated or illegal due to its size and conservation concerns.41
Food basics what goes in the bowl
Alligator snapping turtles are primarily carnivorous, eating fish, crayfish, molluscs, smaller turtles, insects, snakes, birds, and some vegetation. They are opportunistic feeders and will also eat carrion. In captivity, feed hatchlings and juveniles daily, and adults every other day. Offer a varied diet including live fish, worms, crustaceans, leafy greens and fruits. Hand feeding is dangerous.124
Company who they like around
Alligator snapping turtles are solitary and should be housed alone. They do not require social interaction and can become stressed or aggressive if kept with others. They are not suitable pets for beginners due to their size, strength and specific care needs. In some regions, keeping them may be restricted or illegal, so always check local laws before acquiring one.451
The story where it all began
The alligator snapping turtle is native to the rivers and streams of the southern United States. It has been kept as an exotic pet for many years, but its enormous adult size, long lifespan and powerful bite make it a challenging animal for all but the most experienced keepers. It is sometimes captive-bred and available in the exotic pet trade, but many end up needing specialised outdoor enclosures. Conservation concerns and the risk of illegal trade mean potential owners must research thoroughly and ensure they can provide lifelong care.154
The care rhythm Furry Diary remembers it for you
A typical home-care rhythm for a Alligator Snapping Turtle. It is our own starting plan, not a vet's advice, and you can change every line in the app.
- FeedingHow often depends on species and agevaries
- Basking checkCheck the basking spot temperatureevery day
- Water changePartial water changeevery week
- Water testevery 2 weeks
- Filter rinseRinse in old tank waterevery month
- UVB bulb changeFollow the bulb maker's adviceevery 6 months
- Weigh inevery month
- Vet check-upFind a vet who sees exotic petsevery year
Owner questions the things everyone asks
How often should I feed my Alligator Snapping Turtle?
Hatchlings and juveniles should be fed daily, while adults can be fed every other day. Always follow the food label and consult your vet for exact amounts. Furry Diary's starting plan notes that feeding frequency depends on species and age.124 Furry Diary plan
What does an Alligator Snapping Turtle eat, and what should it never eat?
They eat fish, crayfish, worms, crustaceans, leafy greens, and fruits, but hand feeding is dangerous. Avoid any food that could cause harm; ask your vet for a safe list. They are primarily carnivorous but will take some vegetation.124
How much space does an Alligator Snapping Turtle need?
Adults need at least a 700-gallon stock tank or a pond with deep water for swimming. Juveniles can start in a breeder tank but will quickly outgrow it. Provide plenty of room to thrive.41
What temperature, light or water does an Alligator Snapping Turtle need?
They need a heat source to maintain subtropical water temperatures and a basking spot with UVB lighting. In cooler climates, a heated enclosure is essential. Furry Diary's plan suggests checking basking temperature daily and replacing UVB bulbs every six months.41 Furry Diary plan
How often should I clean an Alligator Snapping Turtle's home?
Perform a partial water change weekly, test water quality every two weeks, and rinse the filter monthly using old tank water. Regular cleaning keeps the water healthy and your turtle happy. Furry Diary plan
Can an Alligator Snapping Turtle live with others?
No, they are solitary and should be housed alone to avoid stress and aggression. They do not need company and are best kept by themselves.451
How long does an Alligator Snapping Turtle live?
They can live between 20 and 80 years, so be prepared for a very long-term commitment. Proper care can help them reach their full lifespan.42
Can I handle an Alligator Snapping Turtle?
Handling is not recommended for most owners due to their powerful bite. Only experienced keepers should handle them, and even then very minimally. It's best to admire them from a distance.45
Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Furry Diary's own starting care plan. A friendly guide, not a vet's advice.
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Where this comes from
Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at [email protected] and we will fix it.
- nationalzoo.si.edu: alligator snapping turtle nationalzoo.si.eduused for origin, weight kg, best traits, activity needs, habitat needs, diet basics, social needs, history, fun fact
- fws.gov: alligator snapping turtle macrochelys temminckii fws.govused for weight kg, lifespan years, coat or body, colours, activity needs, diet basics, fun fact
- britannica.com: alligator snapping turtle britannica.comused for length cm, coat or body, colours, best traits
- allturtles.com: alligator snapping turtle care allturtles.comused for lifespan years, temperament, grooming or care, habitat needs, diet basics, social needs, history
- en.wikipedia.org: Alligator snapping turtle en.wikipedia.orgused for temperament, grooming or care, social needs, history
- VCA Animal Hospitals: Feeding times and frequency for your dog vcahospitals.comused for owner questions
- ASPCA: Dog grooming tips aspca.orgused for owner questions
- ASPCA: Cat grooming tips aspca.orgused for owner questions
- ASPCA: People foods to avoid feeding your pets aspca.orgused for owner questions
- RSPCA: What to feed your rabbit rspca.org.ukused for owner questions
Checked 2026-10-01. Text is written in our own words from these sources.