The Russell Terrier

Most people will say oh yes the parson Russell terrier but, the Parson Russell has longer legs then the Russell terrier so there practically different breeds.
The Russell terrier was originated for flushing foxes, raccoons, rabbits and other rodents out of there burrow.
Don't try this but they can actually bend so there head is at there rear end.

normally there head will be down because theyd would be sniffing 

the reason they can bend this way is so they can turn all the way around.

i will share more on this breed but for now 

See you in the doghouse