Elias Weiss Friedman in New York's Washington Square Park. "When I'm on the ground, dogs think that I'm some strange, one-eyed animal, so if I start making a noise, they'll look right into the lens, thinking it's my eye."
Tools of the trade include a squeaky toy, tennis ball, beef jerky, business cards, and (most important) kneepads, which he wears under his pants to look less goofy.
"Kneepads are crucial to being a dog photographer because of being down here all day. And if you don't, then your knees start feeling it. And knees on asphalt is not a fun thing."
Credit: CBS News
Pearl, a nine-year-old French Bulldog, in Washington Square Park in New York City.
Pearl's owner, Amanda Dolan, told CBS News she's a big fan of The Dogist. "I follow him on Instagram. I love how he can capture the dog's spirit in just one photo. It's quick and it's fun and it brightens your day!"
Radley, a four-month-old Goldendoodle, in Washington Square Park in New York City.
"Dogs have always been a part of my life. I was sort of a shy kid growing up, so having a dog -- a dog who loves you unconditionally and someone to talk to and be part of your life -- was an important part of my childhood."
Jack, a four-year-old Miniature Australian Shepherd, in Washington Square Park in New York City.
Friedman uses a Nikon full-frame D-750 with a 35 millimeter lens. "I only shoot with prime lenses because the aesthetic is nicer. It's lighter. And you can shoot six frames per second, so if you're shooting a dog that's moving around, it's important to be able to snap, snap, snap, snap, so that you get the eyes right where you want them.
"The auto focusing is an important part of a camera, too, because if the dog's bouncing around, you don't want the camera seeking back and forth trying to find focus. You need the quick focus."
Pepito, a three-year-old Border Collie, photographed in the 5th Arrondissement in Paris.
"I focus on the eyes because that's the way that we engage with people, that's the way we engage with animals. And dogs are very good at using their eyes to get what they want -- their classic puppy dog look."
Abigail, a 12-week-old Miniature Labradoodle, photographed at 8th Street and 5th Ave., New York City.
"I can photograph 20 or 30 dogs a day. And sometimes I'll get five shots [that work], sometimes I'll get 20 shots. But it's fun just going out there and getting them, [interacting] with dogs all day, bring that back and share that with a large audience and make other people happy."
Sudan, a one-year-old Afghan Hound, photographed at Watts Street and Sullivan Street in New York City.
"Everyone asks me, 'How do you get the dogs to look so posed? And that's the challenge. If we're shooting people, it's hard to get them to look normal. If you're shooting a dog, it's hard to get them to look posed, 'cause they're always looking normal, you know? They're goofin' around. So how do you make 'em look posed?"
The Dogist's Give a Dog a Bone program works with rescued or abandoned pets, such as at the Animal Care Centers of New York, where he photographed Snookie, a three-year-old Pit Bull mix.
"Usually when I visit shelters, they're mostly pit bulls that are there because they're a challenging breed to have," said Friedman. "They're big dogs and they're strong, so it takes the right owner to be able to adopt one of these guys.
"When I see these dogs, I wanna take each of them home but, you know, I can't exactly fit 100 dogs in my apartment," he said.
Dream, a four-month-old Shih Tzu that was adopted from the ASPCA.
Gail Buchwald, senior vice president at the ASPCA's adoption center, told CBS News, "When the Dogist comes here, it's an opportunity for us to showcase our wonderful dogs in the best way possible, and that's because he's able to bring out their inner beauty. We know that every one of these dogs has a story to tell. And often, it's just the lens that can capture it just right so that these dogs have their personality in their photos.
"When I see his photographs, I don't just see a picture of a dog; I see a story and I see, most importantly, a connection."