What did the buffalo say to his son when he went away on a trip? Bison! 👋 #DadJokes #Bison #Yellowstone #YellowstoneNationalPark #Wyoming #Buffalo #NationalParks #DadJokesForDays 📸: nationalparkservice / Neal Herbert - yellowstonenps, WY Image: A fully grown bison lays in a field of grass next to a bison calf with trees and mountains in the distance.