One, two - three new mammals?

Could be. 
A crowd-funded (!) expedition to the Torricelli Mountains of Papua New Guinea placed 40 trailcams and may have gotten pictures of three new mammals. In the words of ecologist Eaun Ritchie: "We certainly got an image of what we think is a new species of sort of small kangaroo, dorcopsulus wallaby. Think small dog-size wallaby if you like. There's also things like bandicoots and rodents that don't appear to be in any of the books that we know about."
It's still a big planet....