Are leopard geckos communal?

There are no reptiles which I know of that actually benefit from being in a communal environment (some would argue bearded dragons do but I don’t have a great deal of experience with them so I wouldn’t like to comment) there are however some species which will tolerate company. Generally speaking leopard geckos are a good example of lizards that can be kept communally. There are however certain things that should be noted while attempting to keep leopard geckos communally:

Never under any circumstances keep two males together, they are prone to fighting and bullying especially around breeding season.
Never keep leopard geckos of different sizes together
Never keep a mature male with an immature female (attempted breeding will probably occur and the female won’t have the resources to cope with a pregnancy)
If you see any signs of fighting you must separate the offending leopard geckos from the group and keep them separately from then on.
If you notice one leopard gecko to be loosing weight it is possible that bullying is occurring and the skinny gecko isn’t getting enough food. The skinny gecko must be separated and kept singly.

Generally, female leopard geckos live quite happily together. Males should never be kept more than one per enclosure, as they will fight for prime basking spots and females. This is especially likely to happen in breeding season.

Breeding pairs can be kept together but you should be careful that you don’t get the male pestering the female often as this may stress her out. Trios (1 male 2 females) generally work better because the male has more females to “look after” so they don’t get pestered so much. It should be noted that you shouldn't keep males with females unless you have the time and equipment to care for the eggs and young. You should also be confident homes can found for the young (this often isn't as easy as people presume it will be).

There are some individuals which just don’t cope well in group situations. They may become aggressive towards other individuals or they may, at the opposite end of the scale, become shy and go off their food.

If you see any fighting, signs of fighting or a leopard gecko which looks like it is loosing weight it is essential that you split them up straight away because this is a dangerous situation for the submissive leopard gecko to be in.

How much space do communal leopard geckos need?

Ultimately more leopard geckos require more space. I wouldn’t try to keep a pair in anything less than a 36x15x15inch vivarium. A trio should b kept in something at least 36x18x18in although 4ft would be better.