They're mounting already

[Ctwith3]

Just got 2 FBTs for my son today from P*tsm*rt. We picked 2 that were on top of each other because we figured they were already friends.
We to took them home and put them in the tank we set up, and after a short while they started moving around. About 30 minutes later one mounted the other and we heard barking. An hour or so later it happened again. One is a little larger than the other.
Is it possible we have a mating pair? Do males act this way together?

Thanks, you guys have a great forum here which made it possible to set up our tank.

[Mentat]

Hello and welcome to FF! FBTs males mount both female and male FBT's. When a male is mounted it gives an unmount call to let the other frog know. You can listen to those calls in YouTube if you search fro FBTs calling .