On your first visit to Puerto Rico, you can get the bolt cutters (upper left star) and some fur from the fence at the chicken farm (right side star). Unfortunately the DNA tester shows that the fur is from a coyote.
When you return to Puerto Rico, the first farmer has decided to trap the Chupacabra. Drive to meet again with his brother (right side star), who suggests that you use your Jeep to corral the three spotted goats at Snaggletooth Rock (center star).
Drive to the area and steer around the three goats (two are together) and herd them to the Rock. Once all three are in the grass circle, leave the vehicle and meet the goat herder, who has set up the large crate with chains and locks.
Well, you can TRY to catch the Chupacabra with it. It gets away, but leaves behind the tooth, which proves it is real.
Not really
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.
Yes, you can find proof of The Jersey Devil, Bigfoot, Nessie, and the Chupacabra. (see related question)
You can't. But its tooth is proof enough that it is an unknown species.
Take it back to Mews. Once you have gotten the photo of the Yeti footprint, and proved the other three cryptids (Nessie, chupacabra, and the Jersey Devil), Mews will send you to track down Bigfoot.
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)
There is no plane on Cryptids Island.You will use the helicopter to fly to various locations in search of evidence of cryptids.
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.
You cannot prove the Yeti based on the evidence from the Himalayas. So you have to prove the other 3 (Nessie, Chupacabra, and New Jersey Devil) and when you do, Mews will send you to pursue Bigfoot in the Pacific Northwest.
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)
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.
you have to have three goats and.. that farmer dude to help you