My boyfriend and I recently bought a male leopard gecko from a breeder and had him shipped across the country. He came in Tuesday morning and has been chilling in a 10 gallon quarantine tank. He's been eating crickets well, been alert, not too skittish. We have been planning to introduce him as a permanent tankmate to our female that we've had for almost a year and a half now. She is housed in a 20 gallon long.
He still hasn't shed yet, so is pale from the stress of shipping.
Here he is from the breeder's page:

And here he is now:

Notice how off color he is! But getting to the main point. Today (sunday) we decided to give him an introduction to our female. We took her out of her tank, rearranged things a bit, took any of her droppings out, and then introduced them both at the same time. I've read that introducing them both to a new tank will reduce territorial fighting, while introducing the male to the female's already setup tank will induce mating, so we opted for the 1st way.
Immediately they started exploring, but then he noticed her, and almost as if he were stalking a cricket, he moved with darts and dashes up to her. Then he started vibrating his tail over and over and went to bite her tail and then her midside. She swung her head around to face him, but by that time we had taken him out.
We are just worried whether this is immediate mating behavior or aggresive behavior. Almost every Leo caresheet on the web has this to say:
A male will vibrate its tail rapidly when it sees another gecko. If the other gecko in turn vibrates its tail in the same fashion then each of them knows that contact has been made with another male and a fight will occur. If, however, a male signals his presence via the tail shaking and the other gecko does not respond in like fashion, then the male knows that the gecko near him is in fact a female. This behavior is one means of determining their sex.
We don't know how to tell what we are seeing from this description. We love her so much, we don't want any harm to come to her. So how do we tell whether it's just lust at first site or if he is attacking her? Any tips, thoughts? Information from people who do have females housed with a male would be great.
Thanks!
(sorry for the long post!)
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0.1.0 Normal Leopard Gecko: Mala Ala
2.0.0 White's Tree Frogs: Wabo and Mermit
0.1.0 Bearded Dragon: Igor
4.0.0 Bettas: Ghost, Misty, Assasin, and Cobalt






