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Home » Tegu vs Monitor Lizard: which one is right for you?

Tegu vs Monitor Lizard: which one is right for you?

Monitor lizards and tegu lizards are an example of two families of big lizards which evolved from a same ancestor, but are actually quite different from one another.

Both types of lizard can both make excellent pets under the right care and conditions, but there are considerable differences in personality and husbandry requirements you should be aware of.

Tegu vs monitor
Tegu lizard (left) vs Monitor lizard (right)
Tegu LizardsMonitor Lizards
e.g. Argentine Tegu, Red Tegu, Colombian Tegue.g. Ackie Monitor, Savannah Monitor, Nile Monitor
Generally larger in size (3.5-5 feet)Generally shorter (2.5-4 feet)
Mostly omnivoresMostly carnivores
Have large jowls and “chonky” appearanceHave long snake-like necks
Non-venomousHave a venomous bite
Generally laid back and calmGenerally active and inquisitive
Easier to care forHarder to care for
Differences between tegus and monitor lizards

Physical appearance

Tegus and monitor lizards may look similar at first glance, but they are actually quite easy to tell apart.

Adults can be easily distinguished from the look of their jowls and necks, which are more prominent in tegus (especially males), making them look like they have “fat cheeks”, whereas monitor lizards tend to have slim, snake-like bodies with long necks.

Argentine tegus also tend to grow quite large in size compared to your average house monitor, although in the wild you will find species of monitor lizards which are twice as big as tegus.

Personality traits

Both tegus and monitor lizards are extremely smart and intelligent reptiles that are able to recognize their caregivers, respond to training and like to engage in playful activities.

Tegus are generally considered more docile and “puppy-like”, while monitors can be a bit more “wild”.

The latter species also takes its name from their naturally inquisitive nature, as they are extremely curious and have a tendency to stand on their legs and “monitor” their surroundings.


When it comes to diet, there a considerable differences in feeding habits between tegus and monitors.

Most monitor species (as well as Colombian tegus) are prevalently carnivore, wich means they mostly feed on insects, eggs and small animals such as rodents.

In the wild, some species of monitor lizards can even attack and prey on large animals such as deers and buffalos.

The Argentine tegu, on the other hand, follows a omnivorous diet comprising meats, eggs, fruits and vegetables.

Their feeding is a lot more varied and they have more of a scavenger than predatory behaviour, meaning they will eat just about anything you toss at them.

Safety issues

Overall, monitor lizards are more dangerous than tegus for a variety of reasons.

First of all, their bite is venomous, although their venom is not fatal to humans. Unlike the vicious Komodo dragon, monitor lizards species which commonly kept as pets are very unlikely to seriously hurt a person.

There is only one documented case of a Nile monitor owner who was potentially killed and eaten by his pets (although it is more likely that the lizards started feeding on him after he died due to natural causes).

On the other hand, tegu lizards are considered very docile and rarely ever attack a human.

Their bite is stronger than that of a monitor’s, but does not contain any venom, and because of their size it can be compared to the bite of a medium-sized dog.

Neither tegus nor monitors should be kept together with other medium-sized pets such as cats and dogs unless under close supervision, and you should never let your lizard near your hamster, bird or any small pet they may see as a natural prey.

Both tegus and monitor lizards can make for very rewarding pets to keep, but neither is easy to care for and they have very specific care requirements you need to look out for.

If you are looking to adopt a big lizard, prepare for the fact that they can live for up to 20 years and will need lots of room, food and entertainment.

Overall, Argentine tegus (salvator merianae) and Red tegus (salvator rufescens) are the two species which are considered easier to keep in captivity and better suited for beginners.

Tegus can grow quite large in size which means they require a lot of room, but other than that, they are generally cheaper than monitors and easier to feed,

This is thanks to their varied diet, lower protein requirements, and the fact that they can eat “human” food as adults (e.g. raw chicken, fish, eggs) which you may have easier access to.

Monitor lizards on the other hand, are less popular as pets and their husbandry requirements are still largely misunderstood.

This means that it’s much harder to find exact guides on how to care for them, and many owners are still left to guess what’s best for their pets.

The taming process is also much longer and more difficult, and may never actually work.

This is why caring for monitor lizards can be challenging and is only recommended to experienced reptile keepers.

Are tegus a species of monitor lizards?

Tegus are not a type of monitor lizard. While tegus and monitor lizards share a common ancestry and belong to the same scientific order, they are not considered the same species.

Tegus belong to the family Teiidae, while monitor lizards belong to the family Varanidae.

They do, however, share many similarities in terms of behavior and appearance, and both can make excellent pets for the right owner.

What are physical differences between tegus and monitor lizards?

The physical differences between tegus and monitor lizards can be quite significant.

Tegus are generally larger in size, with more prominent jowls and a “chonky” appearance. They are mostly omnivores and have a non-venomous bite. In contrast, monitor lizards are generally shorter with a long, snake-like neck.

They are mostly carnivores and have a venomous bite. While both species are intelligent and engaging pets, they have different personalities and care requirements, so it’s important to do your research before deciding which one is right for you.

Are tegus or monitor lizards easier to care for?

Tegus are generally considered easier to care for than monitor lizards, although both species require specific care requirements that should not be taken lightly.

Tegus have a more varied diet and lower protein requirements, making them easier to feed, while monitor lizards require more specific food and supplements to maintain their health.

Tegus are also generally more docile and easier to tame, while monitor lizards can be more challenging and require more experience to keep.

Both species require a lot of space, enrichment, and specialized equipment to thrive, so it’s important to do your research and be prepared before deciding to adopt a big lizard.

What are the pros and cons of tegus vs monitor lizards as pets?

The decision to adopt a tegu or a monitor lizard as a pet should be based on your experience level, lifestyle, and expectations as an owner.

Tegus are generally considered easier to care for, more docile and social, and have a more varied diet.

They are also generally cheaper to purchase and have a wider availability in the pet trade.

Monitor lizards, on the other hand, can be more challenging but also more rewarding for experienced owners.

They are generally more active and inquisitive, and have a more unique appearance and behavior.

However, they require more specific care requirements, more space, and a higher level of commitment.

It’s important to remember that both tegus and monitor lizards can live for up to 20 years, so adopting one as a pet is a long-term commitment that should not be taken lightly.

Tegu & Monitor Lizard for Sale

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