Deer Scat Identification: White-tailed Deer Pellets

Deer, elk and moose are hoofed, so every track is two crescent-shaped halves with the points facing forward; the size and how far the halves splay are what separate the species. Their droppings are pellets, single or clumped, and the pellet size scales with the animal. Look along field edges, game trails and browse lines (twigs nipped off at a slant) for more sign. The measurements below for White-tailed Deer are quoted from the wildlife agencies linked at the bottom of the page.

• Size: Dark, cylindrical pellets about 1.3-2.5 cm (a bit over 0.5 to 1 inch) long
• Shape: Cylindrical pellets
• Contents/color: Dark-colored
• Where: Left in piles, with deposits much larger than a rabbit's

• Front: 2.5-4 inches long (front and hind hooves not measured separately)
• Toes: Two-part cleft hoof with a split down the middle, overall heart-shaped
• Gait: Walking stride about 1 foot; can reach 10-15 feet while bounding

• Rubs (antler rubbing on tree bark): Bucks rub their antlers against tree trunks, tearing the bark to leave a mark
• Scrapes (ground scraping marks): Bucks paw the ground with a hoof to expose bare dirt and urinate on it to mark territory
• Beds and browse lines: Deer beds and browsed vegetation lines are also signs of presence

Similar in appearance, but deer leave far larger deposits than rabbits The Eastern Cottontail page has its own sign list.

Moose hoofprints are larger and less pointed The Elk page has its own sign list.

Put something of known size next to it (a coin, a pen, a boot) and shoot straight down in soft light; low side light brings out the shape of tracks in mud or snow. For scat, photograph the whole deposit and one close-up showing contents. Note where it was: on a log, in the open, on a trail, near water. The app suggests the likely animal; confirm with the size and shape notes above.

Wildlife Illinois describes deer droppings as piles of dark, cylindrical pellets one-half to over one inch long, and notes that they look similar to rabbit droppings but come in much larger deposits. Rabbit droppings are small, dark, spherical and less than 1/2 inch in diameter. Cylinders in a large pile point to deer; small round balls point to eastern cottontail. For other animals, use the animal poop identification chart.

Deer scat is a pile of oval, dark pellets about 0.2 to 0.5 inch in diameter and 0.5 to 1 inch long, shiny and dark when fresh, with no distinct pieces of food visible (Maryland Department of Natural Resources, Common White-tailed Deer Sign, April 2020). When deer eat juicy food the pellets stick together into a clump, but you can still see pellet shapes in the mass.

Published sizes differ, so measure several pellets rather than one:

• Maryland DNR: 0.2 to 0.5 inch diameter, 0.5 to 1 inch long.
• Wildlife Illinois: one-half to over one inch long.
• Huntwise: about 1/2 to 5/8 inch long, the size of a raisin or jellybean.
• Outdoor Life: 0.2 to 0.5 inch long, oval, though some are tapered or round.

Maryland DNR shows a second form of deer scat: clumps 6 to 9 inches across and 8 to 14 inches long, caused by high-moisture foods such as berries and apples. The tell is that the clump is made of pellet shapes pressed together. Huntwise adds that runny or clumped droppings mean deer have moved from woody browse to greener, wetter food. Outdoor Life describes dry droppings as looking like spilled chocolate candies.

So loose, separate pellets usually mean a woody winter diet, and soft clumps usually mean fresh green growth or fruit.

Size and contents separate them. Maryland DNR gives black bear scat as 1.2 to 2.5 inches in diameter and 5 to 12 inches long, varying with diet, often containing seeds and often shapeless. Outdoor Life describes bear piles as much larger and less formed, 1.5 to 2.5 inches wide, with food content you can see.

A summer deer clump can be as long as bear scat, but it is built from pellet shapes and lacks visible food pieces. Bear scat has no pellets and often shows seeds, berry skins or hair. See the black bear page for tracks.

• Eastern cottontail: round balls 0.15 to 0.4 inch in diameter, often with bits of grass (Maryland DNR). Deer pellets are oval and longer.
• Pronghorn: rounder, like chocolate chips, about 0.2 inch in diameter (Outdoor Life).
• Elk: larger, uniform pellets about 0.4 to 0.5 inch, sometimes dimpled (Outdoor Life). See the elk page.
• Moose: much larger, 0.75 inch or more, and like a cow pie after spring green-up (Outdoor Life). See the moose page.
• Mule deer: Outdoor Life says scat cannot be reliably told from white-tailed deer where their ranges overlap.

Fresh deer pellets are shiny, moist and darker; older ones are dry and dull and may crumble (Huntwise; Maryland DNR notes they are usually shiny and dark when fresh).

You cannot tell a buck from a doe by its droppings. Outdoor Life quotes Matt Ross, director of conservation at the National Deer Association: there is no discernible way to tell whether scat came from a male or a female. The same article reports that bucks typically leave 70 to 80 pellets per pile and does 50 to 60, which at most hints at a larger animal.

For scale, Outdoor Life cites the National Deer Association: adult deer defecate 20 to 30 times a day in spring and summer and 10 to 15 times a day in fall and winter. Many piles in one spot does not necessarily mean many deer.

Maryland DNR lists sign that confirms deer when the droppings alone are not enough:

• Tracks: two toes forming an upside-down heart; the toes spread wide when the deer runs.
• Browse with ragged tears: deer have no upper incisors, so twigs and leaves they eat are torn, not cleanly clipped.
• Incisor scrapes in winter: strips of bark scraped off for food, often with scat nearby.
• Antler rubs in fall: bucks rub antlers on young or small trees and shrubs.

Wear gloves or use a tool to move droppings and wash your hands afterward. If you plan to use deer droppings as manure, Outdoor Life cites the USDA recommendation of 90 to 120 days between applying raw manure and harvesting vegetables. If anyone feels unwell after handling animal waste, see a doctor.