The Movie: Brachiosaurs love to lean back on their hind legs to reach high branches, chew on Gum Tree leaves like cows, and sneeze.
Real Life: No. No, they would not do any of those things. Brachiosaurs weren't built to support themselves on one set of legs alone, so in real life, that move would have caused a seismic wipeout. And even if they could pull it off, they'd still drop dead after eating the Gum Tree leaves, which would be as toxic to them as they are to many of today's animals. Also, these enormous sauropods swallowed huge amounts of flora whole with very little chewing involved. And they definitely didn't sneeze — that's a mammalian thing.