The DNA test, if done properly, proves the existence of the Jersey Devil. You still have to get:
-- a footprint photo from the Himalayas
-- a closeup photo of Nessie from Loch Ness
-- a tooth from the chupacabra at Puerto Rico
Once you have proved Nessie, the chupacabra, and the Jersey Devil, you will go to the Pacific Northwest (a new location in the helicopter) to hunt Bigfoot.
Take the shells back to the Mews lab and test them. The DNA analyzer will prove the existence of the Jersey Devil.
Bring them back to the Mews lab for DNA testing.
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)
In a nest at the top of the tree at the old house in New Jersey. You need the grappling hook from the attic to reach it.
It's not the chicken eggs, it's the egg shells from New Jersey. When run through the DNA testing, the egg shells from the nest in New Jersey prove the existence of the Jersey Devil.
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)
You can only test two samples: the fur you bring back from your first trip to Puerto Rico, and the egg shells you bring back from New Jersey. Show these to Mews to start the DNA testing (follow the instructions, and even then you may have to do it twice).
There are only 2 items you check with the DNA analyzer: the fur from Puerto Rico and the egg shells from New Jersey. If you follow the test process carefully (and press the devleop button on the developer), Mews will tell you the results.
Show them to Mews then follow the instructions on the DNA test. After the x-ray tray is in the developer, press the flashing button to get the result.
When you see the Jersey Devil at the old house in the forest, it flies away. Use the grappling hook from the attic to climb the tree next to the house.
go to mew's mansion to continue your journey.
As you leave the attic of the old house, you see the Jersey Devil through the windows. As you go outside, it flies away. Climb the tree to recover broken shells from its eggs. You need the Grappling Hook from the attic (at the right behind the barrel with the raccoon).