Sexing Blue tongue lizards

[Reptiles101]

This question must be asked a lot, but I want to know what's the easiest, safest and accurate way to sex a blue tongue lizard.
P.s not spending heaps on probing

 

[JasonL]

There is no easy way. Any method of sexing Blueys require experience.
and probing isn't really a good option...

 

[Reptiles101]

So if probing is not a good option, how would i tell if its male or female?

 

[JasonL]

interaction with other blueys is the easiest way, most aged wild ones are easier to after years of experience, fat captive ones can be more difficult... as I said there are various ways but they require some skill and a lot of experience

 

[morrie]

what about DNA/chromosome testing? if there is such a thing?

 

[glennh]

Hi, dont know how true this is but many years ago i was told that the lighter the belly means male where more colour or tint is female,
Any body else heard this?

 

[Hazordous-Herps]

The best way to sex them is to look for the sperm plug( I think it's called) when it poops. But you could also try the interaction thing.

 

[MrFireStorm]

Although not 100% accurate, I use a couple of different methods which of course all depends on age and size.

1. The distance between front and rear legs can be used. Generally if there is a longer distance between the legs can determine a female (due to extra room required to carry babies. Males are generally shorter in distance.


2. Head width is also an option. Females tend to have a narrower head width where as males are broader (boofier). This can be down to a couple of different opinions.
a. Human females will try and tell you that all males are boofheads, but I prefer;
b. Males have a larger brain therefore need the larger head to be able to fit the brain.

Of course, these are just my opinions. :lol:

Daz

 

[jinjajoe]

The best way to sex them is to look for the sperm plug( I think it's called) when it poops. But you could also try the interaction thing.

True but if housed with a male a female can have a sperm plug during the mating season.

Probing is pointless as I probed a bunch of animals of proven sex and females sometimes probed deeper than males and vice-versa.

The best way in my opinion is to build a case one way or the other based on the following 5 visible pointers;

1. Tail length and width (longer and thinner tails = males & shorter wider = females)
2. Head size (bigger pointier heads = males & smaller rounder heads = females)
3. Broader shoulders & narrow hips = males & narrow shoulders wider hips = females
4. Defined hemi-pene bulges = males & lack of hemi-pene bulges = females
5. & of course mating activity etc.

ALL of these 5 points need to be considered and a case built there on. As Jason said fat captive specimens can skew results which is why a multiple of indicators are needed.

In addition neonates have no method of sexual determination to date.

 

[Reptiles101]

My blue tongue lizard had a poo this morning and i noticed these like white long things in his/her poo, my question is what are they?View attachment 271510

 

[dragonlover1]

the photo's didn't work but likely they are the calcium/caltrate part of the the waste which is a good thing because it means your lizard is getting enough calcium.
Sexing a blue tongue is usually done by looking at the tail,females have a shorter thicker tail than the male but it is not always as easy as that;we have had a bluey for several years who we thought was male by this method(and we have had several blueys including pregnant female)but after brumation this year suddenly went woohh she's a girl

 

[Reptiles101]

There like these slimy white long things, that are next to the poo.
I thought they might be sperm plugs or something.

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View attachment 271549Here is the pic hope it works this time