Organization

In the first film, the largest Krite took leadership over the others.^[9] This is carried over into the second film where, though later turning out to be Ug in disguise, the largest Krite was seen as the leader once more, being able to persuade the immense pack of smaller Krites to continue on to Polar Ice Burger instead of attacking the humans that were following behind them.^[10] Although the concept of the biggest Krites being the leader was dropped in Critters 3, the Krite whose face was burned by bleach is shown leading the group throughout most of the film and is the last Krite to be killed.^[11] Because the fourth film only has two main Krite characters, it is difficult to determine if a lead Krite is being suggested, although one Krite (the one who had the top of its headshot bald by Charlie when it was a hatchling) is shown as ordering around the other Critters.^[12]

Appearance

Krites have been described as porcupines, rats, badgers, opossums, hedgehogs, rabid cats, Tasmanian devils, and a slew of other similar creatures.^[13]

The appearances of the Krites vary from film to film. In the first film, they appear to be much smaller than in later installments (save for the lead Krite) and not as furry. Their stomachs are fully revealed, whereas, in the sequels, they are covered completely by fur.^[14] Their fur appears more slicked back instead of wild or spiky like in the sequels, and their teeth appear more needle-like than in future installments. In one scene in the original film, a Krite's eyes appear to be orange instead of the bleeding red seen throughout the rest of the film, but this look is never repeated.^[15]

In the second film, the Krites appear larger than in the first film, have larger teeth, with fur (thicker and more haphazard than their predecessors) covering their entire bodies except for their arms and legs.^[16] Also, their poisonous darts are much bigger.

In the third and fourth films, the Krites look about the same in every aspect, although their eyes appear duller in the latter film.

In the reboot, the Krites have an appearance similar to their design from the first film. Their hair is a lot messier, their teeth got smaller, and their stomachs became hairless again. Some of them also have bald heads.

Reproduction

Not much is mentioned regarding the reproduction habits of the Krites, as no information is shown in the films or given in interviews by the creators. They are portrayed with a need to eat before laying eggs, but how they produce eggs in the first place is never revealed. No mating rituals are shown or discussed in the films.

In Critters 4, Charlie tells Fran that it takes six months for Krite eggs to incubate.^[12] This is contradicted in the previous installment, when the eggs from the beginning of the film hatch in what appears to be a span of just a few hours, and in the second film, where eggs laid in the first film appear to have remained dormant for two years before they were found.^[17] How many eggs a Krite can produce at one time is not revealed.

It may be that temperature has an effect on Krite eggs, seeing as the eggs in Critters 2 and Critters 3 seemingly hatch in response to close proximity to heat (a heater and the underside of a truck, respectively). This also appears to be a factor in Critters 4 and Critters 2 in which the eggs lie dormant when cryogenically frozen or left in a cold drafty barn and hatch almost immediately when exposed to a warmer temperature. Extremely cold temperatures also seem to have a detrimental effect on eggs, as hairless hatchling Krites are shown in Critters 4 when the eggs are laid in a cold incubator.

Diet

Krites are exclusively carnivorous. The idea that is eating more and more increases the Krite's size, eventually leading to a Krite becoming the alpha or dominant in its group, is suggested only in the first film and may be a sign of Krite maturity, as the Krites in the first film are much older than the Krites in the subsequent films.

Hunting habits

Krites are normally seen to hunt and attack in groups.^[18][19] Rarely has a Krite been shown to attack on its own outside of the few occasions in the first and fourth films. Charlie explains in the fourth film that Krites generally go for a victim's face and neck, although the films show them attacking the chest and gut area of a victim more often than not. Once a victim is caught, usually one Krite initiates the attack, and the others quickly follow in one swift barrage.

Krites' only weapons are the natural weapons built into their bodies. One such mechanism is the ability to shoot a poisonous barb like a projectile at a victim.^[20][21] The barb injects a type of poison into the victim's bloodstream, causing the victim to fall asleep or unconscious for an unspecified amount of time.^[14][21] It is shown that removing the barb awakens the victim. It is not revealed whether these barbs affect other Krites. The fourth film is the only film in which the Krites do not utilize their poison barbs. The size and thickness of the barbs vary from film to film.

Another mechanism is their rather large mouth filled with rows of sharp teeth.^[22] A Krite's bite is shown to be extremely effective and difficult to extricate. In most cases, a victim is forced to beat on the Krite's snout-like that of a great white shark or crocodile, or stab the Krite with sharp objects enough that it releases its hold.^[19][22]

The second film introduces the giant Critter ball—an enormous sphere of Krites all latched onto each other to move as one single unit.^[10] Not much is revealed about this mechanism, except that it enables the herd to survive a factory explosion and being rammed by a pickup truck,^[10][23] but not the direct impact of a bounty hunter space ship.^[23] It is only used in the second film.

The Krites in the third film are shown launching themselves straight up into the air, as seen when one of the Krites launches itself up a laundry chute in an attempt to attack Rosalie.^[19] A variation is shown at the end of the film, when a Krite tucks itself into a ball and revvs up as a means of attack.^[11]

While never shown to be used, Krites also have three sharp claws on their hands and feet.

Intelligence

Throughout the series, Krites are shown to have varying degrees of learning and intelligence. In the first film, the Krites escape from a seemingly highly advanced prison asteroid where they are to be executed by hijacking a spaceship. Although the Krites fall for the trap set for them at Polar Ice Burger in the second film (which could perhaps be attributed to a disguised Ug persuading them to go), they are shown forming into a giant sphere and saving themselves from impending destruction, although this action could be viewed as being based on instinct.^[10] In the third film, the Krites formulate a successful plan to infiltrate a room where humans have locked themselves by moving through the ventilation system.^[24][25] In the same film, once the humans moved up to the attic and blockaded the door, the Krites opted to move up the elevator shaft to get to them.^[11] Critters 4 shows the Krites being able to easily use a space station's core control computer and change the navigation course from an unknown planet to Earth.^[12] The film also shows them being able to use the growth accelerator in one of the labs to genetically enhance their offspring.^[26]