You don't. After you take a photo of the footprint above the monastery, bring it to Mr. Mews. He'll tell you it was a snowshoe and it's not worth revisiting. You will need the lantern from the monastery to use in New Jersey.
When you have proven the existence of the other three Cryptids (Nessie, Chupacabra, and the Jersey Devil), Mews will send you in pursuit of Bigfoot in the Pacific Northwest.
There is no yeti footprint. You have to find all the other cryptids first.
You don't. However, you will later follow Bigfoot as he travels through the trees in the Pacific Northwest.
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 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 don't. Gte the lantern from the monastery, and take a photo of the footprint in the snow. But Mews is not convinced so you don't go back. Instead, once you have proved the other three cryptids (Nessie, chupacabra, and Jersey Devil), he sends you to hunt Bigfoot, who is similar to the Yeti.
Since the monks won't let you test the Yeti scalp, you have no proof. Once you have the lantern and the footprint photo, you can find nothing at the Himalayas. However, once you prove the other three cryptids (Nessie, Chupacabra, and the Jersey Devil), Mews will send you in pursuit of the similar creature, Bigfoot.
A person can get a yeti guide in Cryptids by visiting the Himalyans. A yeti will appear and the player will have the option to pick him for hire. The yeti will also provide the player with a lantern for future travels.
on top of the temple :)
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.
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 ask the Chinese guy in there for the yeti scalp. If he says no, He will get you a lamp. lite it with the matches. That's all i can tell you.
You will search for evidence in four locations around the globe where cryptids have been observed. As you discover possible clues, you examine them to see if they are genuine. Nessie - at Loch Ness Yeti - in the Himalayas Chupacabra - in Puerto Rico Jersey Devil - in New Jersey (see solution at the related question)