Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
This is the fourth sequel to the original Jurassic Park (1993) which is now the first movie in the Jurassic World trilogy. Jurassic Park had a quick cameo by a snake. This one has a quick cameo by a few snakes. That's what we call progress. I was hoping that the next movie would have an entire island full of giant prehistoric snakes but that never happened.
Bryce Dallas-Howard plays an uptight hair-helmeted dino park PR woman who is babysitting her sister's two kids for the day. (Spoiler alert - she messes up her hair pretty bad by the end of the movie after running around all day in high heels. She probably messed up her feet, too.) Chris Pratt is a dinosaur whisperer. After the dinosaurs escape and the other 21 thousand park visitors fled the island, the four of them are left alone to run around the island trying not to become dinosaur food. (When will they ever learn not to open another dinosaur park? Probably never, not as long as the movies keep making a fortune, and this one made almost $2 billion!)
At one point the four of them go inside the laboratory where the park's science witches stirred a cauldron full of DNA to make the super-dinos that are now eating everyone. We are told that the scientists used the DNA of tree frogs, T-rex, velociraptor and pit viper genes, among others. In the background we see a few snakes in terrariums in the lab, including some albino snakes, along with other creepy stuff. None of the snakes are pit vipers, of course. This is exactly how all of the best science labs keep their specimens - displayed in brightly-lit glass enclosures kept right in the middle of the lab. Only in the movies....
I can't tell what kind of albino snakes they are. Probablly some type of boas or pythons. And why are they always albino snakes now? It used to be that normal snakes were creepy enough.