Because its showing you found bigfoot. It also happens to the other monster. Hope it helps.
you get Nessie follower and bigfoot costume
Bigfoot has to come last because you have to save him.
RUN]
you follow him
at spy island hiding in the bushes
Yo dot capture him
a place with monks and bigfoot head
You have to go find Greg
Reboot Poptropica if either the Helicopter or Bigfoot stops moving. This is a known glitch affecting less than 1% of Poptropica players on the island.
you can't you get bigfoot at the end tho, so....yah
having same problem
You beat the Bigfoot thing on poptropica on crypt island on poptropica by following it for 2-3 minutes and not losing it. Then you see Grimlock and then you chase her and when you get close your avatar will say "I hope I wouldn't regret this" and you jump on her helicopter. Then you go down and press the gas part (where the gas is stored like in a car) then you have to jump down onto the cage where bigfoot is and use your hedge clippers (from the worker by mews mansion) then you and bigfoot fall.