Deep Ellum is in the heart of downtown Dallas bordered on the west by Highway 75 and the east by Highway 30. It generally ends at the railroad tracks to the north. It is a triangle of arts, entertainment, nightlife, and quirky Dallas history which you can experience on any given night in the area. You can find many dog-friendly establishments such as Allgood Café at Canton and South Crowdus that have outdoor tables for guest with dogs. Cane Rosso on Commerce has outdoor seating and some of the best pizza around! Alternatively, you can stop for a cup of coffee and a dog treat at the Murray Street Coffee Shop and Café Brazil will offer a cup of water for your pup. Bucky Moonshine’s on Elm also has pet-friendly outdoor tables. Dallas is extremely hot in the summer and it is not uncommon for temperatures to rise to over 100 so protect your dog's paws from the hot concrete!
Deep Ellum is an urban sidewalk-heavy experience due to its relatively flat terrain. Concrete, pavement, and asphalt are common which can keep things a little grey. Traffic is high and Dallas drivers move fast, so you'll need to use the designated pedestrian crossing zones at all times and keep an eye out for the quick moving cars. There can also be a good deal of pedestrian traffic depending on the time of day and what is going on in the city proper. This is a tourist destination for the quirkiness of the area and the art establishments, so keep your dog on a leash and close by. There are very few trees which are mostly for decoration, not shady cover. Make sure you travel with water for both you and your canine friend and keep an eye out for city street debris that can harm your dog's paws since it is a downtown metro area.
Unfortunately, there are no true greenways in Deep Ellum. You will find the Deep Ellum Dog Loft Dog Park on Canton Street and Bark Park Central which is technically not in Deep Ellum but just across the street under the elevated portion of Highway 75. It is a cute park with watering bowls, showers, and shaded areas which provide nice and relaxing space to rest. The only other green space you will find is at South 2nd Avenue and Canton Street where there is a small green turf encircled by a walking path. This is not a park but rather a planned turf area where there are no off-leash areas for pups. Regardless, it's still a fun area to explore. Across the street is Exposition Plaza with a small planned treescape area. For the most part, this will be an urban region without natural influences, so you'll need to wander a bit to find spots of green.