Tortoises headbutt each other by bracing their legs and ramming themselves forward, causing their shells to collide with other tortoises, objects, or humans.
Tortoises won’t harm themselves by headbutting but may flip over another tortoise.
Male tortoises headbutt each other to show dominance, court females, and claim mating rights, while gravid females ram objects to protect themselves and drive off threats to lay their eggs in safety.
Tortoises even headbutt black items and objects, including black shoes. This happens when tortoises fear dark colors or think it’s another tortoise (or turtle).
Headbutting can be a way to vent frustration. If a tortoise is ramming you, this is usually due to what it sees as over-handling or not being fed soon enough.
Why Does My Tortoise Headbutt Everything?
Male tortoises are more inclined to headbutt things (especially black or dark-colored items) than female tortoises. Targets include inanimate objects, other pets, and people.
The behavior can have various meanings, depending on what the tortoise rams:
1/ Ready to Mate
According to the Journal of Bone and Mineral Metabolism, headbutting can indicate that a tortoise has entered the mating stage.
It’ll have excess energy and hormones driving it to impress a mate. The tortoise will spend its time headbutting random objects to scare them off, so it can claim mating rights for the area.
Also, it’ll burn off its frustration through activity and exercise if it can’t find a mate. Should a female be present, a male may ram against her shell with a headbutt.
Ramming shows his prowess and exhausts or knocks females into submission in readiness for the breeding process. It can last for several days as the courting rituals continue.
2/ About To Lay Eggs
If a female has reached sexual maturity, she may be preparing to lay eggs.
In response to her maternal hormones, she may become more aggressive. This will result in headbutting to drive away other tortoises, pets, people, or inanimate objects that she sees as a threat.
The female tortoise will be trying to:
- Defend herself.
- Protect the eggs she’s carrying.
- Scare off threats.
3/ Demonstrate Authority
Tortoises can become territorial and try to establish who is dominant. To accomplish this, conflicts will break out where tortoises headbutt each other.
These ramming sessions are designed to scare, hurt, or flip over the other tortoises. Usually, once a tortoise has been flipped, the loser and winner will disengage.
The losing tortoise (usually the smaller one) will be wary of the victor and stay away.
In a way, they like neighbors but not roommates. If a tortoise feels overcrowded, fights over dominance are more likely.
The tortoise will attempt to defend its personal space and drive off competition, protecting food/water resources and burrows.
Some tortoise species are more social than others and don’t mind sharing space. Some will even allow other tortoises into their numerous burrows.
However, if tortoises often fight, consider whether they need a bigger enclosure.
5/ Food Competition
Tortoises will begin headbutting others if they fear there may not be enough food and water.
They’ll defend their resources and keep others at bay to avoid starvation or dehydration. It could mean the tortoise is overcrowded, or you’re feeding it too little or infrequently.
Tortoises establish territory and dig burrows where there are ample resources. They’re happy to share if there’s enough for everyone, but if they consider the amount too small, they’ll drive off competition.
Tortoises are easy-going creatures that don’t need much to stay calm. However, tortoises get stressed out by many things, including noise, bullying, predatory animals, and over-handling.
This can lead to added aggression as the tortoise tries to relieve its distress. Headbutting and ramming will be an outlet for its frustrations.
7/ Feeling Bored or Frustrated
Tortoises lead simple lives, but they still need fun and enrichment.
If a tortoise is bored, with nothing to explore, climb, or forage for, it’s likely to become aggressive. The tortoise will begin ramming objects, other tortoises, and even enclosure walls to entertain itself.
It may be trying to escape to find more interesting activities. Glass walls regularly lead to frustration, as the tortoise won’t understand why it can’t get through the invisible barrier.
Why Does My Tortoise Headbutt Me?
Most tortoises headbutt their owners due to over-handling, food delivery, and frustration.
It may dislike being handled too much and want you to leave it alone for a while. Tortoises don’t mind some handling, but they’re not social animals like cats and dogs.
The tortoise may be eager to receive its food and wants you to put the meal down.
Of course, it could be breeding aggression or defensiveness if you’re dealing with a tortoise during the mating season. That’ll go away once the tortoise’s hormones settle.
Can My Tortoise Injure Itself While Headbutting Stuff?
Ramming is a natural behavior that tortoises evolved to display over millions of years. Wild and domesticated tortoises will have the instinct to ram and do so many times throughout their lives.
According to the Mechanics of Materials and Structures, turtle and tortoise shells are specifically shaped and grooved to distribute the impact of ramming. They’ve evolved to ensure this practice doesn’t result in serious damage to themselves.
Headbanging isn’t intended to damage another tortoise permanently. At most, it should be jarring and unpleasant, perhaps resulting in another tortoise getting flipped on its back.
So, a tortoise can’t hurt itself because its shell is thick, strong, and resilient.
Shells are made of bone and keratin, with thick plates that offer additional protection. The outer ridge of the shell is designed for ramming, so it’s reinforced.
Tortoises shouldn’t be stopped from ramming. Instead, you should note what the ramming means. The tortoise may be in emotional or physical distress, so headbutting is a means of expression.
Headbanging is a common activity in tortoises and turtles, especially males.