Assuming you mean Teufelshunde (devil dogs in German) then it already is the plural
Literally Devil Dog means Teufelshund. The plural Devil Dogs would be Teufelshunde.Historically (and grammtically false): Teufel Hunden
I think the person said, "Ich werde dich töten, Sie Hunden" which is grammatically incorrect, even if I rewrite it, because it would have to be, "Ich werde SIE töten, Sie Hunden" or "Ich werde dich töten, du Hund." The first one means "I will kill you (plural), you dogs" and the second one is the same but singular.
In World War I, during the battle of Belleau Wood in France, the Marines were named 'Teufel Hunden' by their German aggressors. There remains some dispute to the factuality of the story, but this remains the general folklore passed on in the Corps.
Hunden som log - 1989 is rated/received certificates of: Sweden:Btl
Tim Teufel's birth name is Timothy Shawn Teufel.
Tim Teufel is 6'.
Wolfram Teufel was born in 1961.
Wolfram Teufel is 185 cm.
Fritz Teufel was born in 1943.
Fritz Teufel died in 2010.
The population of Teufel Nursery is 2,010.
The population of Teufel Nursery is 200.