Need help with sexing Colorado River toads

Size (females are bigger) and body shape (females are wider) are the main methods. I can usually tell just by looking at them. Do you have any photos?

Originally Posted by cosyis77

Does anybody know how to sex them? I have two sub adults, but dont know their sex.

if they are still sub adults it is unlikely that they will be sexable, otherwise what John said, it is the same with the majority of toad species.

Originally Posted by John

Size (females are bigger) and body shape (females are wider) are the main methods. I can usually tell just by looking at them. Do you have any photos?

Sure,here is the link http://www.flickr.com/photos/47785392@N05/4535824719/

Originally Posted by SethD

if they are still sub adults it is unlikely that they will be sexable, otherwise what John said, it is the same with the majority of toad species.

Actually I can sex the juveniles pretty well from about an inch and a half in size - males just have a different appetite and shape to females.

Originally Posted by cosyis77

Sure,here is the link http://www.flickr.com/photos/47785392@N05/4535824719/

That photo is pretty small. Do you have more, bigger photos. And can you tell us how long they are (from tip of nose to the tip of their vent/rear end)?

Originally Posted by John

Actually I can sex the juveniles pretty well from about an inch and a half in size - males just have a different appetite and shape to females.


That photo is pretty small. Do you have more, bigger photos. And can you tell us how long they are (from tip of nose to the tip of their vent/rear end)?

They are both 4"

Looks like 2 males to me, though the second one might be female. Check the thumbs of the front feet - do they have "pads" there? Males have these to hold on to females during breeding.

Originally Posted by John

Looks like 2 males to me, though the second one might be female. Check the thumbs of the front feet - do they have "pads" there? Males have these to hold on to females during breeding.

Both males?

Originally Posted by cosyis77

Both males?

Definitely.Those nupital pads are pretty obvious and that is a dead give away.

There you go, both males. Females are almost round in comparison to males, when viewed from above.