The Jeep owner, but only after you have checked the DNA on the fur you get from his brother's fence. Once you've done that, come back to Puerto Rico and corral three spotted goats at the center star (Snaggletooth Rocks). Once you have, the farmer will meet you there with his trap.
On your second trip to Puerto Rico, the farmer will be trying to trap the chupacabra at Snaggletooth Rock (center star on the map). Drive there and use the jeep to corral 3 spotted goats into the area near the rock. Get out and meet the farmer, and soon you will capture the chupacabra (sort of).
Not really
On your second trip to Puerto RicoThe box (crate) is what the farmer uses to try to catch the chupacabra. Once you corral three spotted goats at the center star (using the jeep), get out and wait with the farmer to catch the chupacabra in the box.
Yes, you can find proof of The Jersey Devil, Bigfoot, Nessie, and the Chupacabra. (see related question)
On your first visit to Puerto Rico, you find some fur that turns out to be a dog's fur. On your second trip, the farmer is out to capture the chupacabra. You will find him at Snaggletooth Rock in the center of the map. Use your jeep to herd 3 of the spotted goats into the area (as bait), then join the farmer at the rock. He has a crate set up to trap the creature, but it escapes, and fortunately loses a tooth for you to bring back to Mews.
You can't. But its tooth is proof enough that it is an unknown species.
i dont know and which island
On your first trip, get the bolt cutters (upper left star) and the fur from the right-hand star, the chicken farm. On your second trip to Puerto Rico, the farmer is out to catch the chupacabra. Use the jeep to herd 3 spotted goats into the clearing at the center star, then get out and join the farmer.
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 don't take any goats from Puerto Rico. On your second trip there, the farmer prepares a trap for the chupacabra. Drive your jeep to corral 3 spotted goats into the area of Snaggletooth Rock (center star on the map). Then get out and join the farmer there.
You can summon Nessie with the pennywhistle. You can lure the chupacabra (on your second visit to Puerto Rico) by herding 3 spotted goats into the area of Snaggletooth Rock (center star on the map). The farmer will prepare a trap there.
The farmer at Puerto Rico lets you use it when you arrive there.