Probably the most rare ancestral dog in the world is not extinct.

CNN Article - Monday, August 31, 2020
Rare 'singing' dog, thought to be extinct in wild for 50 years, still thrives.

NIH (National Institutes Of Health) - Monday, August 31, 2020
Scientists use genomics to discover an ancient dog species that may teach us about human vocalization

 

Hm. Not sure I'd call that sound pleasant and harmonious, but it is very cool these dogs have been rediscovered. They are nice looking critters. Wonder how those teams got close enough to get blood samples from them. Offered them treats?

 

Fifty pounds of raw baby back ribs will draw a crowd.
I suspect a tranquilizer gun?

 

A good discussion on the 2016 Expedition for the Highland Wild Dogs.

http://www.nghwdf.org/hwds

 

After they setup the cameras, they used the following as lures, attractants & treats:

Fresh estrus urine from captive NGSDs (collected August – September 2016)
Fresh cus cus urine
Evanesce Predator Curiosity Lure (beaver castor, mink gland secretion, skunk essence)
Karak Coyote Gland Lure (red coyote glands) and coyote gland scent obtained from hunters and hunting supply stores
Sandhill Magik Predator Paste bait (20 years plus aged bobcat meat)
Cooked chicken, fish and chicken bones obtained from the mine cafeteria