Just get the grappling hook in he attic of the cabin and go to the nearest tree. Press Use on the grappling hook in your backpack and climb up. Grab the egg and bring it back to Mews Mansion.
Yes, you can find proof of The Jersey Devil, Bigfoot, Nessie, and the Chupacabra. (see related question)
The Jersey devil lives in a forest in mid Jersey. It is VERY dangerous to go to the forest and try to get proof of him. If you will, you better pray that a gun is enough to protect you from it!
You need a photo of the actual Nessie, a tooth from the chupacabra, and egg shells from the Jersey Devil. (see the related questions below)
The proof for Nessie is a photo from Loch Ness. The proof for the chupacabra is a tooth from Puerto Rico. The proof for the Jersey Devil are egg shells from its nest in New Jersey. You cannot prove the Yeti, but when you have proven the other three, you go to follow Bigfoot, which is a similar creature. (see the related questions)
The grappling hook is part of the solution in New Jersey. It is in the attic next to where the raccoon appears. Use the grappling hook to climb the tree and recover some egg shells from its nest. Take this back to Mews, as it provides proof of the Jersey Devil.
To win the island, you must find the proof that confirms the existence of three legendary cryptids : Nessie of Loch Ness, the Chupacabra, and the Jersey Devil. Then you have to rescue the 4th creature, Bigfoot, from the evil plans of Gretchen Grimlock. (see related solution question)
He only sends you after you have proven Nessie (photo), the chupacabra (tooth), and the Jersey Devil (egg shells). You also have to get a photo of the snow footprint from above the monastery in the Himalayas, even though it is not convincing proof.
Ebenezer : The Jersey Devil. There have been many sightings told from different people in the state of New Jersey.There have even been signs of Jersey Devil Eggs found atop a tree near the house of which it came from. The beast is likely known to have the body of a horse and Horns and Wings for a part of a dragon. The Jersey Devil is somewhat yet to be discovered from scientists all over the world but has never found ACTUAL proof of their kind. For More information please do so at my profile. Thank you
You don't. After you get the lantern and the footprint photo, there is no other proof available in the Himalayas. Once you prove the other three (Nessie, Chupacabra, and Jersey Devil), an opportunity will come up to chase Bigfoot instead of the Yeti, since they are similar creatures.
There is no proof that the devil has ever been seen.
You don't find a photo, you take a photo, on the trail above the monastery in the Himalayas. You also collect the lantern there. But back at the Mews lab, the footprint is not convincing proof. You don't have to go back to the Himalayas. Get the proof for the other three cryptids (Nessie, chupacabra, and the Jersey Devil) and an opportunity to get the Yeti/Bigfoot will present itself.
You travel to the locations around the world to find evidence. Nessie (Loch Ness) - get a photo of the actual monster Chupacabra (Puerto Rico) - get a tooth from the monster New Jersey Devil (New Jersey) - get egg shells from the monster's nest Yeti (Himalayas) * No proof found * Bigfoot (similar creature in US northwest) - follow Bigfoot and save him from capture *For the full solution, see the related questions below