Yes, like Jellycandy said: your tama needs to have a baby first. When your tama is 7 (or sometimes 6) years old a Matcmaker will come to visit your tama. She comes at 10:30 am, 3:00 pm and 7:00 pm. Then you'll mate with another tama that she found for you and you'll have a baby. And at midnight when the adult tama has been with his/her baby for at least 24 hours it will leave and you'll have your new generation. ^^v Do you get it?