![Four variations of what I believe to be U.S Dog Gas Masks, these would later be replaced by the M6-12-8 Dog Mask. Bottom right has the look of a Navy Diaphragm slightly. : Four variations of what I believe to be U.S Dog Gas Masks, these would later be replaced by the M6-12-8 Dog Mask. Bottom right has the look of a Navy Diaphragm slightly. :](https://preview.redd.it/four-variations-of-what-i-believe-to-be-u-s-dog-gas-masks-v0-qo3saml6kxg81.jpg?auto=webp&s=7cd9d6313a263b2a6a0d53ef814626a026140315)
Four variations of what I believe to be U.S Dog Gas Masks, these would later be replaced by the M6-12-8 Dog Mask. Bottom right has the look of a Navy Diaphragm slightly. :
![Amazon.com : forepets Set of 3pcs Breathable, Protective Anti Fog, Anti Dust, Anti Smoke Dog Muzzle Protective Mask with Adjustable Strap for Small to Large Dogs, Pet Respirator Mask (S) : Pet Amazon.com : forepets Set of 3pcs Breathable, Protective Anti Fog, Anti Dust, Anti Smoke Dog Muzzle Protective Mask with Adjustable Strap for Small to Large Dogs, Pet Respirator Mask (S) : Pet](https://m.media-amazon.com/images/I/61G9mG4y+oL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : forepets Set of 3pcs Breathable, Protective Anti Fog, Anti Dust, Anti Smoke Dog Muzzle Protective Mask with Adjustable Strap for Small to Large Dogs, Pet Respirator Mask (S) : Pet
![Because of the critical combat role played by dogs during WW1 & WW2, serving as sentries, messengers, attackers and even mascots, British and American governments also developed canine gas masks. : r/interestingasfuck Because of the critical combat role played by dogs during WW1 & WW2, serving as sentries, messengers, attackers and even mascots, British and American governments also developed canine gas masks. : r/interestingasfuck](https://i.redd.it/m4ymohaxdp451.jpg)
Because of the critical combat role played by dogs during WW1 & WW2, serving as sentries, messengers, attackers and even mascots, British and American governments also developed canine gas masks. : r/interestingasfuck
![K9 Mask® Air Filter Mask for Dogs with 'Extreme Breathe' PM2.5 Premium Air Filter Refills - Blue (Small) : Pet Supplies - Amazon.com K9 Mask® Air Filter Mask for Dogs with 'Extreme Breathe' PM2.5 Premium Air Filter Refills - Blue (Small) : Pet Supplies - Amazon.com](https://m.media-amazon.com/images/I/51CE8pbAfDL._AC_UF1000,1000_QL80_.jpg)