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Can I house adult and juvenile crested geckos together? How to sex them?

Updated On September 23rd, 2025

Hey, I have two crested geckos one is a Juvenile and the other a full grown adult. First question is can I put them in the same environment ? Also how can I tell if my juvenile is female or male. I know my male has big balls but from the Juvenile I only see two small dots on the side but no balls like my grown male gecko .

1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on November 23rd, 2018

Keeping them together would not be recommended. The adult may see the juvenile as prey and may try to eat him/her. Cresties can be tricky to sex, especially when young. If yours weighs at least 10-15 grams, you may be able to see pores using a magnifying glass or jeweler's loupe. You may see the beginnings of a bulge at around 30 grams body weight. If you are unsure, have him/her examined by your veterinarian or a vet experienced in treating reptiles.

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