Observing signs of predators

How are the nails? Takes whether they are to the ground while walking and how this can be verified? Take two pieces of board up to 1 m. Put one of them a layer of damp sand, on the other crude (but not too wet) clay. Smooth them surface and make them walk the dog. Compare the footprints on the side and on the board. Where do they come out more clearly? Sketch the best tracks front and rear paws. Measure the length and width, as well as the quantity of dog steps. Compare the tracks in the snow with those turned on the sand and clay. What's the difference? As imprinted dog tracks in the snow of different densities - from the loose until the very tight? Sketch and compare them with each other. Measure the footprints of dogs of different breeds and write in your journal. The same observation, perform the above paw of the domestic cat. Notice how different it is from a dog in the structure of the soles, toes, claws. Note the difference of gait and other animals. If the district is a fox or a wolf, try to find their traces. This should be done better collectively skiing. If we manage to come across a suspicious mark, measure and sketch it in order to compare with traces of the dog. Pass, possibly on the found track and record all observations, which will make the (Form path loop, double-track), distance (approximate) from residential places and roads, encountered to detail (manure, dug his paws fossa, shape and size of logs or maturation time, the remains of eaten prey, etc.). Do whatever conclusions from those observations, which you can spend.