Raised beds protect plantings from scampering paws and swinging tails. Dogs can be taught where they’re permitted and where they are not.
Digging pit, preferably in shaded locations, give dogs places to practice their excavation skills without disrupting your garden beds. You might entice them to use it by lightly burying (as they watch you) a treat-filled Kong.
Leave a plant-free “patrolling” area around the perimeter of your yard; dogs instinctively (and repeatedly) cruise boundaries and fence lines.
Construct a barrier around plants of the nightshade family, including eggplant, tomato and potato; their foliage and stems contain dangerous alkaloids that can kill a dog. Foxglove (Digitalis purpurea), Deadly Nightshade (Atropa belladonna), Larkspur (Delphinium ajacis) have toxic effects on the heart and circulation. When dogs eat large amounts of onions, they may suffer red blood cell destruction. Rhubarb leaves (Rheum rhabarbaram) contain oxalic acid. In quantity, it damages kidneys.
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Avoid cocoa bean mulches; their chocolaty smell makes them pup catnip, but they contain theobromine, which is toxic for dogs.
Cross almond or walnut trees off your list for areas used by dogs; tannin is a canine toxin, and almond and walnut hulls contain it; moldy walnuts are also a problem. Avoid trees with toxic bark, such as cherry (contains cyanide-like components). And, some stone fruit trees (apricots, plums) can provide raw material for obstruction by indigestible pits.
Do not use snail bait containing metaldehyde, which is highly poisonous to dogs and cats. Copper barrier tape is a good alternative; slugs and snails are deterred from crossing it by the tape’s tiny positive electric charge.
Protect young trees, especially if you have a male dog. Be sure to frequently rinse the trunk and soil with fresh water. Or, secure a copper or galvanized splash guard of appropriate height and circumference around the developing tree the first couple of years to divert unwelcome attention from your pup.