Preheat the oven to 350F. Lightly grease a 9x13 baking dish.
In the bowl of a food processor, pulse the animal crackers until they are in fine crumbs like sand. Add the butter and pulse briefly to combine.
Place the pretzels in a ziploc bag. Using a rolling pin or heavy spoon crush the pretzels into small chunks.
Press the graham cracker mixture into an even layer on the bottom of the pan. Layer the other ingredients in this order - pretzels, chocolate chips, and coconut. Pour the sweetened condensed milk over the top then sprinkle with the pecans.
Bake for 20-25 minutes until lightly golden. Allow to cool before slicing. Enjoy!