Dream About Bird Sanctuary Anaconda Encounter

I was with 3 of my friend, (one of them is out of the country but in my dream he was there). We where in college attending class but college was my old highschool. This highschool looked entirely different it was gorgeous full of plants and gardens (this isn't the first time o have a dream about this highschool looking like this). We took a walk in one of the gardens but one of my friends and I took a turn in a corner to a kind of hidden path. We found a bird sanctuary full of birds, all kind of birds, we where amazed and I was giving facts about birds when something caught my eyes, it was s huge anaconda, bigger than normal. I told my friend to look at it but then the anaconda turned to us and started to move quickly towards us. I told her to run and the birds got startled. She escaped safe but I got trapped with the huge snake In a room, Then someone (I really don't know) got caught by the snake but he didn't die