Sneaky Sniffers
The politest spies in any yard. A Sneaky Sniffer slips across every fence — closed borders never stop it — though rival pups and city gates still block the way.
Beside a rival city it can Peek at the Yard (20 Treats: the fog rolls back) or Borrow the Recipe (40 Treats: bonus Science if they know tricks you lack — but a coin flip sends your pup home with ears down and a small grudge).
Nobody is ever hurt sniffing. Getting caught is embarrassing, not dangerous.