glad to here it
If you got them from a petstore most likely they are not neutered. You can't really tell if they have been previously neutered by eye balling them, a vet could tell you though.
Females arn't as bad as males but you mentioned you had more than one? If so you need to have seperate cages for them during october to march as they will attack and hurt each other with their agression and need to breed. In the wild a female can get away from a male unable to breed, and vise versa, but not so in captivity.
To breed prairie dogs you need several square yards of floor space for each prairie dog and build tunnels and burrows to stimulate natural environment with heat lamps on an 8 hour winter timer.
Good luck with your new pets!