Having covered Gnomes from a floral aspect for a couple of episodes now, it's time to turn to fauna - the beasts of the Gnomes' world.
I'm going to assume an archetypal D&D fantasy woodland and its animals - that is to say, Northern Hemisphere, European, and temperate, with defined seasons. The variety of animals (excluding invertebrates) run the range of fish, reptiles and amphibians, birds (waterfowl, passerine and non-passerine, raptors) and mammals. In the works of B.B and Wil Huygen the largest animals are generally badgers, foxes, domesticated dogs and polecats, but a fantasy woodland might also incorporate bears, boars, wildcats and wolves. Below that size are the other common woodland creatures: otters, squirrels, moles, bats, mice, rats, voles, rabbits, hedgehogs, weasels and stoats. The Cook Expert D&D Set of course includes giant ferrets as guard animals for a sample Gnome lair - but the aforementioned works, strictly sticking to their favoured Gnome dimensions (roughly a handspan), has no need of them.
Size notwithstanding, it's the relationship which counts. Gnomes are the guardians of the woodland, friend to most animals, and sometimes fellow residents (B.B's little grey men share a tree with a couple of owls, Hugyen's foster infant mammals). Reptiles are at best tolerated - in Down the Bright Stream an adder is as capricious and sinister as the serpent of Eden, and fish are equally food and predator, depending on their size (minnow and a pike, respectively.) The underlying philosophy is that the Gnomes share their woodland home with animals. They rarely eat flesh, save for fish (it's okay, they don't have any feelings), and steal bird eggs, but don't seem to hunt fowl or rabbits. This extends to their craft - of which more in another post.
Above: Gnome with Squirrel, after B.B
Gnomes share a language with the animals, being able to converse with (seemingly) all mammals, most birds, and the aforementioned adder, and they rely on the strength, skills (burrowing by moles, hunting by otters, flight by the owls) and knowledge of these creatures. In exchange they ply their crafts, invention and dexterity to help their animal friends. In short, Gnomes are a woodland creature among others - notably in the Tales from the Wood RPG inspired by Watership Down and the books of BB, Gnomes are simply another player type alongside the rabbits, badgers, squirrels and other creatures.
To the adventuring Gnome such relationships and skills are significant. The ability to naturally Speak With Animals (certain kinds) and rely on them for intelligence and local lore could be very handy. the ability to summon those creatures at a time of peril could be a life saver.
Best left there for now. Suffice it to say the animal/Gnome relationship is essential to the character class and not to be sniffed at. There's more to add, but there we drift into the mystical. And that's best for another post...