Constant bugs.. sims freezing..events glitching, etc.

Could you try a clean folder anyways ?

Animal adoption is a known issue that has a report here: [CD] Cant adopt pets | EA Forums - 13401773 

For the rest, is best if you give more details and split things up. For crashing, it's best to post in the tech forum of your platform.

For bugs, please see this for more info: General Information About The Bug Reports Forum | EA Forums - 4965007 and [PLEASE READ] Information/Questions about the bug forum | EA Forums - 11850203