1. Know the conditions.
Is the trail hard-packed soil? Crushed stones? Jagged rocks? Is it really steep in places? Is it going to get significantly warmer or colder throughout the day? Are there water sources available? And most importantly, is the trail explicitly not dog-friendly? All of these should factor in to your plans to bring your dog hiking. You want to be sure that the terrain and weather are both something your dog can handle, and that you're not going to place your furry friend in to a dangerous situation. Check weather forecasts, trail maps, elevation maps, and recommendations. Most marked trails are now present online, on either official sites, hiking search engines, or personal blogs. Do a search and see what you find out.
2. Know your dog.
3. Be prepared. For anything!
Any hiker knows that you need to be prepared for anything. In addition to the basics, such as a compass, map, and extra pair of socks, you want to be prepared for anything regarding your dog. You need to bring water if you hike by yourself, so you need to bring some (and maybe a collapsible water bowl) when you hike with your dog too. Don't rely on the availability of natural streams, rivers, or brooks. Even if the water is running, it may still contain nasty parasites that can be ingested through the water. You may want to bring a snack or treats for them as well. Hiking can drain their energy, which you need to replenish, and you may need to reward them if you have to issue commands at all. And just as you'd bring a first aid get for yourself when hiking, bring some supplies for your dog too, just in case. Be sure to include gauze and bandage tape, as well as a tick removal tool. Also, knowing where the nearest emergency vet is helpful to know, if your dog get's injured or has an injury. Bring the contact info, as well as a cellphone. It's better to be safe than sorry.
4. Be responsible.
Hiking's a peaceful time to reconnect with nature, get some fresh air, and relax. For humans and dogs alike. Be safe, be prepared, be mindful, and you and your pup can enjoy hikes for years to come.