
Baskervilles rarely fit well, so many dogs aren't happy in them.
A well fitting muzzle looks almost comically oversized, but it makes a huge difference to comfort level. For a scavenger, you'd want to block the end off. Some greyhound muzzles come with a stool guard for that purpose, or the Jafco vinyl muzzle is suitable too and can be worn during exercise. That is an american brand but, there's a UK version of them but I can't remember the name!
If you go to The Muzzle Shop, they can help with greyhound style light plastic ones and with fitting; and if you're on Facebook, go on this group:
https://www.facebook.com/groups/muzzleuppupThe UK alternative to the Jafco is named on there if you search for it. I'm not a member now so I can't find out for you, sorry.
There are different types of Jafco-type muzzle but this is the style you want to look for if you go for one of those:
https://www.amazon.co.uk/Clear-Jafco-Size-3rd-Strap/dp/B07BGDJCNG