Answers to the following:
1. You would have to set up a Break Dancer on a community lot if you play a neighborhood other than Belladonna Cove. You can find the mat in Buy Mode when you go remodel a community lot to add it just like you would with the Firedancer mat. Then when you play your Sim, send the Sim to that newly remodeled lot and have the Sim learn to breakdance just like he/she would learn Firedance from the Firedancer.
2. If you have a mod enabling teen pregnancy, you will have to address that question on the site you got the teen pregnancy mod from that allow you to move the family out with the kid. I suspect you have Inteen? If you do, please ask that question at
Simbology.
3. The cow plant lures stupid Sims with birthday cake pieces and eat them alive. Seriously, these cow plants are to avoid if you don't want your Sims to die to these plants.