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 How to Sex Beaded Lizards (and Gila Monsters)

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TOM_CRUTCHFIELD
Snakekeeper
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TOM_CRUTCHFIELD


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Number of posts : 42
Age : 74
Location : Homestead, Florida
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Registration date : 2009-12-06

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PostSubject: How to Sex Beaded Lizards (and Gila Monsters)   How to Sex Beaded Lizards (and Gila Monsters) Icon_minitimeSun 7 Feb - 3:09

I am often asked how to sex Beaded Lizards (Heloderma horridum) and Gila Monsters (Heloderma suspectum), so I thought I would post the best pictures I have of a proven pair of Beadeds along with an explanation. Juvenile Heloderma are very difficult to sex accurately. No one, including me, can reliably sex an immature animal. Juvenile Heloderma can be sexed by a veterinarian using endoscopy; HOWEVER, the veterinarian must know the difference between ovaries and testes, which most veterinarians do not.

As Heloderma become sexually mature, it becomes easier to sex them from build, tail size, and head size. In older Heloderma, any really giant specimen is undoubtedly a male at 99% probability. A sexually mature male Heloderma will be larger, bulkier, thicker at the base of the tail where the hemipenes are, and have a slightly longer tail.

Upper specimen = male. Lower specimen = female.
How to Sex Beaded Lizards (and Gila Monsters) Tc_fac44

Upper specimen = male. Lower specimen = female.
How to Sex Beaded Lizards (and Gila Monsters) Tc_fac45

Left specimen = female. Right specimen = male.
How to Sex Beaded Lizards (and Gila Monsters) Tc_fac46

Left specimen = male. Right specimen = female.
How to Sex Beaded Lizards (and Gila Monsters) Tc_fac47

Left specimen = male. Right specimen = female.
How to Sex Beaded Lizards (and Gila Monsters) Tc_fac48
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Andrew Hacket
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Andrew Hacket


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PostSubject: Re: How to Sex Beaded Lizards (and Gila Monsters)   How to Sex Beaded Lizards (and Gila Monsters) Icon_minitimeSun 7 Feb - 17:41

Interesting read , Thanks.
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Michael Jonasson
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Michael Jonasson


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PostSubject: Re: How to Sex Beaded Lizards (and Gila Monsters)   How to Sex Beaded Lizards (and Gila Monsters) Icon_minitimeSun 7 Feb - 18:55

Can you tell the same difference on juveniles? Im planning to buy a pair of juvenile gilas this spring and wouldnt want to end up with 2.0 or 0.2.
Is it possible to check gender on young gilas without xray?
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TOM_CRUTCHFIELD
Snakekeeper
Snakekeeper
TOM_CRUTCHFIELD


Male
Number of posts : 42
Age : 74
Location : Homestead, Florida
Points : 5352
Registration date : 2009-12-06

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PostSubject: Re: How to Sex Beaded Lizards (and Gila Monsters)   How to Sex Beaded Lizards (and Gila Monsters) Icon_minitimeSun 7 Feb - 20:59

As I have said I can't accurately sex juveniles by appearance. Quite simply it's a luck of the draw on young ones...thanks
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