Gordon the lurcher spent five months in rehabilitation after the incident, which left him with a fear of people.
Between March and June, the charity has cared for nearly 3000 animals and released 700 back into the wild.
Scottish SPCA investigating after one snail found dead while two others receive specialist attention.
One cat has died and several others have suffered similar injuries to the base of their tail or gone missing.
The dead snakes were discovered within a month of each other at Den of Maidencraig in Aberdeen.
Susan Hume, 45, neglected her dog and cat by keeping them in a squalid flat.
The Scottish SPCA freed the woodland creature, which had become trapped in netting.