Hello!
Most people/ animals died from Hurricane Katrina. 600,000 pets died from the devastating hurricane and 1,833 people died. People adapted by getting to higher ground and doing what you can to survive. Animals unfortunately didn't have the capabilities to climb upon houses and such. They don't have arms and legs like humans do, so many animals died. Animals that died are : cows, dogs, cats, and such on. 80% of New Orleans was under water and up to 20 ft deep in some places.
Hope it helps!