Before you go to New Jersey, you need the matches from Loch Ness, the lantern from the Himalayan monastery, and the bolt cutters from Puerto Rico (upper left star on the Jeep map).
Cut the lock on the dumpster with the bolt cutters, and take the junk door into the restroom. When you match it to the other door, you have the directions to the house in the forest. Use the matches to light the lantern before you go.
(The shortcut is right left, right left, right left to the dead-end in the forest.)
hop on the helicoper in front of Mew's mansion
You have to look for Bigfoot/Yeti in the Himalayas, the Jersey Devil in New Jersey, the Loch Ness Monster in the Loch Ness in Scotland and the Chupacabra in Puerto Rico.
There are 3 you have to prove: Nessie (Loch Ness) Chupacabra (Puerto Rico) New Jersey Devil (New Jersey) You can't get what you need to prove the Yeti, so you are sent to find Bigfoot.
You need a photo of Nessie at Loch Ness, a tooth from the Chupacabra from Puerto Rico, and egg shells from the nest of the Jersey Devil in New Jersey. (see related solution)
You need the bolt cutters from the upper left star at Puerto Rico. Cut the lock and take the old door back into the restroom.
On Cryptids, you go to the Himalayas and ask for the Yeti skull. He will not give you it, but you will be handed a lantern to 'light your way' as he claims.
there is a look around button in the bottom left hand corner xoxo
You don't go to New York. You do, however, go to New Jersey in the helicopter. (see related question)
The forest is in New Jersey. You will need the lantern from the Himalayas, the matches from the pub at Loch Ness, and the bolt cutters from Puerto Rico before you can proceed at New Jersey.
In the deserted house in New Jersey, you have to slide the dresser to the left on the second floor, so that you can jump to the attic.
You need the lantern from the Himalayas, and the matches from Loch Ness, so that you can travel in the dark forest at New Jersey.
It's not the chicken eggs, it's the egg shells from New Jersey. When run through the DNA testing, the egg shells from the nest in New Jersey prove the existence of the Jersey Devil.