Question: Nowadays, are Jews supposed to bring animal sacrifices?
Answer: It depends on how you look at it. God commanded the Jewish Nation to perform certain daily sacrifices in the Beis HaMikdash (Holy Temple in Jerusalem). However, God does not allow us to perform those sacrifices if the Beis Hamikdash is not standing. The Temple was destroyed around 2000 years ago, and for the last 2000 years or so we have followed Jewish law by not performing those sacrifices.
With Jews, what matters most is doing what God tells us to do. By not sacrificing, we are currently following God’s orders concerning those very sacrifices; in other words, just as we followed His orders concerning sacrifices 2000 years ago, we continue to follow His orders concerning sacrifices today… by not doing them.