Heat options in plastic tank?

[EasternGirl]

If Steve, Chris, Richard and Stefan are all saying female...I'd go with female. They have been doing this a long time. I just started trying to sex based on tail structure.

[ConcinusMan]

If Steve, Chris, Richard and Stefan are all saying female...I'd go with female. They have been doing this a long time.

That's not to say we've never been wrong. I certainly have been wrong before. Usually with very young snakes. It's much easier to be certain if the snake is at least 12 inches long, or about a year old. When visually sexing neonates, I only get about 90 percent accuracy. After a year old, or 12 inches, accuracy is nearly 100% just by sexing visually.

[chris-uk]

If Steve, Chris, Richard and Stefan are all saying female...I'd go with female. They have been doing this a long time. I just started trying to sex based on tail structure.

Don't put me in the same league as those 3. I'm struggling to work out which of our blacknecks is male and which is female, or if both are actually female (Sjoerd and Claudia sexed them as a pair, and I'm going with their experienced eye over mine and Char's for now) these western blacknecks are so long and slender (like... 6 months old, 42cm long and 22g) that they're actually pretty difficult to sex, but they'll get easier as they approach a year old.