Meet Patron: The Ukrainian mine-sniffing dog that's become an internet sensation

A Jack Russell terrier has become an internet sensation after working to sniff out explosives in Ukraine.

Patron, which is Ukrainian for "cartridge", is the military mascot of an explosives unit from Chernihiv. 

Patron has helped clear more than 90 explosive devices and landmines.

An Instagram page set up for him shows him with his protective vest, searching for explosives and standing next to bombs he helped discover.