Mammal Mysteries

Mammal Mysteries

Have you spotted any mysterious tracks or unexplained droppings? Wherever you live, be it in the heart of Bristol, in leafy suburbia or somewhere more rural, the Avon area is rich in opportunities to track the wildlife around us.

Perhaps the most charismatic of Avon’s mammals are our resident beavers. Their exact locations may be secret, but their tracks and signs are not. Look out for large piles of branches beside watercourses, as well as gnawed wood - especially where a branch has been chewed to a point. These can all be signs that a beaver is in residence. You may also be lucky enough to see a beaver footprint. A clear print will be large and long, and it will display the outline of the web of skin connecting the toes.

Inspired? Here are some other tips on how to be a mammal detective, from naturalist Darren Tansley.

Mammals like to stay hidden, and they’re very good at it! Many prefer to emerge at night, when they’re protected from prying eyes by the cover of darkness. However, even the stealthiest species leave behind clues for us to find. Look around and you’ll see tell-tale signs of these animals’ hidden presence. Let’s take a look at some of the prints you might find…

Cats and dogs

Being able to tell the prints of cats and dogs apart from prints left by wild animals is necessary when playing detective. Because dogs come in such a variety of sizes, their prints can be very variable, though are often around 3-5cm wide. They have four toes with big claw marks in front of the toes. Cat prints are generally 2-3cm wide and, because cats pull in their claws when walking, they have no claw marks at all.

Dog prints (c) Darren Tansley

Dog prints (c) Darren Tansley

Foxes

Foxes are the wild cousins of dogs, so their prints also have four toes, but their footprint is a neat diamond shape. There is a triangular foot pad with four toes around the sides and front, with two neat claws forming a point at the front. Their droppings are also dog-like, usually pointy at one end, and full of fur, feathers, tiny bones, seeds and berries. Fresh droppings have a particularly pungent, musky smell.

Fox Print (c) Darren Tansley

Fox Print (c) Darren Tansley

Badgers

Badger feet are as big as a medium dog’s but have five toes instead of four. Their prints show a wide, squarish foot pad with five toes in front of it. The toes have long claws for digging. Badgers follow the same routes when they’re foraging, so they leave well-worn trails wherever they search for food. They poo in shallow pits called latrines, and their droppings vary from firm and sausage shaped to soft and slimy.

Badger prints (c) Philip Precey

Badger prints (c) Philip Precey

Deer

We have several species of deer, from the dog-sized muntjac to the horse-sized red deer. But all their tracks are roughly the same shape, just different sizes. Muntjac tracks are around 3cm long, whilst red deer tracks are up to 9cm long. Deer really walk on tip-toes, so you only usually see two long pointed toe prints side by side, with no claws or foot pads. Some species live in herds and create big muddy trails with dozens of footprints. Look for tracks crossing streams, footpaths and ditches, or heavily trodden tracks through woodlands. Deer droppings are smooth, shiny dark pellets that are pointed at one end, often sticking together in clusters.

Red deer and muntjac slots (c) Darren Tansley

Red deer and muntjac slots (c) Darren Tansley

Rabbits

Rabbit footprints are an oval shape. You won’t really notice separate paw marks, but the four feet are arranged in a triangle as they hop around. It is often easier to find rabbits by looking for the little round pellet droppings they leave on lawns and fields where they have been feeding.

Otters

Otters spend a lot of their time in rivers, so you’re most likely to find footprints along muddy banks coming out of the water, or on sand and silt under bridges. They have five teardrop-shaped toes around a large pad, but one toe is usually off to one side – like if you spread your hand out and look at your thumb. Otters will often leave droppings (known as spraints) in prominent places along rivers, such as on rocks or under bridges, to mark their territory. Spraints are crunchy looking, filled with fish scales and tiny fish bones, and when fresh smell like jasmine tea.

Otter print (c) Darren Tansley

Otter print (c) Darren Tansley

For more tips on recognising animal signs, check out our poo and track identification pages.