Dog urine is an acid which, over time, will kill even healthy trees by burning their trunks and (literally) opening them up for pests and diseases to attack. Even if the urine doesnâ€t come in contact with the trunk, constant bombardment lowers the pH of the surrounding soil and burns the roots.

And if you think one little shot wonâ€t hurt – remember that your dog is marking the tree, and every other dog will follow suit. Itâ€s more than saplings and even many mature trees can take.

Trees are valuable assets in an urban environment. So do yourself and your neighbors a favor and direct your dogâ€s attentions elsewhere.