GOOD MORNING, AMERICA. >> WE ARE LOOKING FORWARD TO >> WE ARE LOOKING FORWARD TO THAT. THAT. WE ARE GOING TO TURN TO A NEW WE ARE GOING TO TURN TO A NEW WARNING FOR TOURISTS. WARNING FOR TOURISTS. YELLOWSTONE NATIONAL PARK ISSUED YELLOWSTONE NATIONAL PARK ISSUED AN ALERT AFTER SEVERAL INCIDENTS AN ALERT AFTER SEVERAL INCIDENTS THAT PUT WILD LIFE AND PEOPLE IN THAT PUT WILD LIFE AND PEOPLE IN DANGER. DANGER. TREVOR AULT HAS THE STORY. TREVOR AULT HAS THE STORY. >> Reporter: WHEN YOU ENTER A >> Reporter: WHEN YOU ENTER A NATIONAL PARK, YOU ARE USUALLY NATIONAL PARK, YOU ARE USUALLY GOING TO SEE SIGNAGE THAT ASK GOING TO SEE SIGNAGE THAT ASK THAT PEOPLE RESPECT NATURE AND THAT PEOPLE RESPECT NATURE AND WILD LIFE. WILD LIFE. BUT THERE HAVE BEEN SO MANY E BUT THERE HAVE BEEN SO MANY EGREGIOUS ACCIDENTS THAT THEY EGREGIOUS ACCIDENTS THAT THEY WERE FORCED TO PUT OUT A WERE FORCED TO PUT OUT A STATEMENT. STATEMENT. AFTER A STRING OF FRIGHTENING AFTER A STRING OF FRIGHTENING CLOSE ENCOUNTERS AT YELLOWSTONE CLOSE ENCOUNTERS AT YELLOWSTONE NATIONAL PARK, THIS MORNING PARK NATIONAL PARK, THIS MORNING PARK OFFICIALS ARE URGING TOURISTS TO OFFICIALS ARE URGING TOURISTS TO RESPECT AND PROTECT THE ANIMALS RESPECT AND PROTECT THE ANIMALS SAYING IN A STATEMENT, SOME SAYING IN A STATEMENT, SOME ACTIONS BY VISITORS HAVE LED TO ACTIONS BY VISITORS HAVE LED TO THE ENDANGERMENT OF PEOPLE AND THE ENDANGERMENT OF PEOPLE AND WILD LIFE AND RESULTED IN THE WILD LIFE AND RESULTED IN THE DEATH OF WILD LIFE. DEATH OF WILD LIFE. >> BECAUSE OF THINGS LIKE SOCIAL >> BECAUSE OF THINGS LIKE SOCIAL MEDIA, LOT OF PEOPLE HAVE LOST A MEDIA, LOT OF PEOPLE HAVE LOST A BIT OF COMMONSENSE AND DON'T BIT OF COMMONSENSE AND DON'T GIVE SPACE AND RESPECT THESE GIVE SPACE AND RESPECT THESE CREATURES NEED. CREATURES NEED. THEY PUT THEMSELVES AND THE THEY PUT THEMSELVES AND THE ANIMAL IN SERIOUS DANGER. ANIMAL IN SERIOUS DANGER. >> Reporter: AUTHORITIES ARE NOW >> Reporter: AUTHORITIES ARE NOW INVESTIGATING TOURISTS WHO THEY INVESTIGATING TOURISTS WHO THEY SAY THIS MEMORIAL DAY WEEKEND SAY THIS MEMORIAL DAY WEEKEND GRABBED A BABY ELK AND TOOK IT GRABBED A BABY ELK AND TOOK IT INSIDE THEIR CAR TO THE POLICE INSIDE THEIR CAR TO THE POLICE STATION. STATION. LAST MONTH A MAN FROM HAWAII NOW LAST MONTH A MAN FROM HAWAII NOW CHARGED WITH INTENTIONALLY CHARGED WITH INTENTIONALLY DISTURBING WILD LIFE WAS SEEN DISTURBING WILD LIFE WAS SEEN MOVING A NEWBORN BISON AFTER IT MOVING A NEWBORN BISON AFTER IT WAS SEPARATED FROM ITS MOTHER. WAS SEPARATED FROM ITS MOTHER. YELLOWSTONE PARK RANGERS WERE YELLOWSTONE PARK RANGERS WERE FORCED TO EUTHANIZE THE CALF FORCED TO EUTHANIZE THE CALF WHEN THEY COULDN'T REUNITE IT WHEN THEY COULDN'T REUNITE IT WITH THE HERD. WITH THE HERD. >> IF YOU'RE GETTING IN THE WAY, >> IF YOU'RE GETTING IN THE WAY, NOT ONLY COULD YOU GET INJURED, NOT ONLY COULD YOU GET INJURED, COULD THE ANIMAL GET INJURED OR COULD THE ANIMAL GET INJURED OR IN TROUBLE, BUT YOU'RE IMPEDING IN TROUBLE, BUT YOU'RE IMPEDING OR HURTING THEIR CHANCES FOR OR HURTING THEIR CHANCES FOR SURVIVAL. SURVIVAL. >> Reporter: WE'RE ALSO SEEING >> Reporter: WE'RE ALSO SEEING VIDEOS LIKE THIS, A YELLOWSTONE VIDEOS LIKE THIS, A YELLOWSTONE TOURIST TAKING A SELFIE NEXT TO TOURIST TAKING A SELFIE NEXT TO A BISON WHO EXPERTS WARN IS A BISON WHO EXPERTS WARN IS SERIOUSLY RISKY BEHAVIOR. SERIOUSLY RISKY BEHAVIOR. >> KEEP GOING. >> KEEP GOING. >> Reporter: LAST YEAR THIS >> Reporter: LAST YEAR THIS WOMAN AT A TEXAS NATIONAL PARK WOMAN AT A TEXAS NATIONAL PARK TRIED SNEAKING BY A BISON. TRIED SNEAKING BY A BISON. SHE SPENT SIX DAYS IN THE SHE SPENT SIX DAYS IN THE HOSPITAL. HOSPITAL. EXPERTS SAY ALWAYS HAVE A PLAN EXPERTS SAY ALWAYS HAVE A PLAN OF EXIT IF A BISON GETS TOO OF EXIT IF A BISON GETS TOO CLOSE. CLOSE. OF COURSE THE BEST PLAN IS TO OF COURSE THE BEST PLAN IS TO ALWAYS MAINTAIN A SAFE DISTANCE ALWAYS MAINTAIN A SAFE DISTANCE OF 75 TO 100 FEET. OF 75 TO 100 FEET. >> YOU DON'T HAVE A PRAYER IN >> YOU DON'T HAVE A PRAYER IN HECK AGAINST THOSE BISONS. HECK AGAINST THOSE BISONS. THOSE ACCIDENTS ARE COMPLETELY THOSE ACCIDENTS ARE COMPLETELY AVOIDABLE. AVOIDABLE. >> Reporter: WE ALL KNOW >> Reporter: WE ALL KNOW NATIONAL PARKS ARE AMAZING. NATIONAL PARKS ARE AMAZING. BOTTOM LINE FROM YELLOWSTONE, IF BOTTOM LINE FROM YELLOWSTONE, IF A BISON IS NEAR YOUR TRAIL, A BISON IS NEAR YOUR TRAIL, LEAVE IT ALONE AND