You follow him to his home in the caves. But Gretchen Grimlock cages him and tries to carry him away. You have to chase her in your helicopter, jump over to it, open the gas tank, and jump down to cut loose the cage.
Yes, you can find proof of The Jersey Devil, Bigfoot, Nessie, and the Chupacabra. (see related question)
first you have to find all the other cryptids then you go in the helicoptor to the new location and follow him to his cave
In the Pacific Northwest, follow Bigfoot in the copter as he moves through the trees. Be careful because he may trick you. You have to follow him until he reaches the caves.
You don't. However, you will later follow Bigfoot as he travels through the trees in the Pacific Northwest.
Not Bigfoot's footprint, but possibly that of the Yeti (a similarly described creature). It is above the monastery on a trail to the upper left. You need a photo of the footprint in the snow.
You can't, because it never appears. You do find Bigfoot at the end of the quest. All you can do at the Himalayas is get the lantern from the monastery and a photo of a footprint high up on the mountain. This is not enough proof. When you prove the other three cryptids, Mews will send you after Bigfoot instead.
When you first start the island and you get the paper about Mews needing the evidence of ONE cryptid to get your reward, you end up needing to search for 4: Bigfoot, the Loch Ness Monster, the Chupacabra, and the Jersey Devil.
You could get all you want because you actually have the whole creature at the end, before he is evidently released back into the wilderness.
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.
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)
Bigfoot lives in a cave in the Pacific Northwest, and you cannot go there right away. You only locate Bigfoot after you have visited all four of the original sites (Loch Ness, Himalayas, Puerto Rico and New Jersey) and proved the existence of three cryptids -- Nessie, Chupacabra, and Jersey Devil. When you have gotten the footprint photo from the Himalayas, and confirmed the cryptids at the other three sites, Mews will tell you that Bigfoot has been sighted in the Pacific Northwest, and you fly there to find him and track down his home.
Prove 4 cryptids to qualify for the Mews million-dollar reward. You find a footprint that may be from the Yeti, but you can only prove Nessie, the Chupacabra, and the New Jersey Devil. Then you have to track Bigfoot and save him from Gretchen Grimlock. (see the related solution question)