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Mastiff puppies and dogs in Sullivan, Missouri

Looking for a Mastiff puppy or dog in Sullivan, Missouri? Adopt a Pet can help you find an adorable Mastiff near you.

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Adopt a Mastiff near you Mastiff in cities near Sullivan, Missouri Other pups in Sullivan, Missouri Search for a Mastiff puppy or dog near you Browse Mastiff puppies and dogs in nearby cities Browse related breeds in Sullivan, Missouri Mastiff shelters and rescues in Sullivan, Missouri Learn more about adopting a Mastiff puppy or dog

Adopt a Mastiff near you in Sullivan, Missouri

We don't see any Mastiffs available for adoption right now, but new adoptable pets are added every day. Try a different search below!

Or, how about these Mastiffs in cities near Sullivan, Missouri

These Mastiffs are available for adoption close to Sullivan, Missouri.
Photo of Ivy

Ivy

Mastiff Shepherd (Unknown Type)

Female, 5 yrs 4 mos
Cuba, MO
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Ivy is housebroken, current on vaccinations and will be spayed before adoption. Food motivated, eager to please and likes to be right by your side. She knows how to sit for a treat.

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Photo of Murphy aka WC Babe Pup-Berte

Murphy aka WC Babe Pup-Berte

Mastiff Terrier (Unknown Type, Medium)

Male, Adult
Warrenton, MO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Spayed or Neutered, Shots are up-to-date,
Story
Have you ever seen a better looking sweet and fun guy? I am just a little guy looking for my forever home to grow up in. Come meet me please. I would love a home of my own. June 23, 2026, 1:47 am

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Photo of Brook

Brook

Mastiff Great Pyrenees

Female, 1 mo
St. Louis, MO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Spayed or Neutered, Shots are up-to-date,
Story
Meet this splashingly adorable puddle of puppies! Introducing Cove, Sea, Brook, Ocean, Reef, Harbor, Bayou, Lake & Creek! They are ready to send waves of love, fun, and playfulness right into your homes. Born to their mama Freya, these pups are going to make excellent dogs. They are a great mix of Great Pyrenees, Mastiff and who knows what- so they are sure to be big pups. NOTE: They will be available to meet at our PetSmart Adoption Events in Springfield and Rolla, MO on Saturday, June 27. Come meet them and take one home! If you're interested in adopting me, please fill out an application at www.polkcountyhumanesociety.org/adopt. You can also reserve an appointment to meet me. Some pets are in foster homes or may already have visits scheduled, so appointments help ensure I’ll be available. Polk County Humane Society is located in Bolivar, Missouri, and we welcome adopters from any state. We have access to a transport to Aurora, CO. Other out of state adopters either travel to Missouri or arrange & pay for air transport. Virtual meet and greets are available on the appointment request. ##2755255##

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Photo of Lake

Lake

Mastiff Great Pyrenees

Female, 1 mo
St. Louis, MO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Spayed or Neutered, Shots are up-to-date,
Story
Meet this splashingly adorable puddle of puppies! Introducing Cove, Sea, Brook, Ocean, Reef, Harbor, Bayou, Lake & Creek! They are ready to send waves of love, fun, and playfulness right into your homes. Born to their mama Freya, these pups are going to make excellent dogs. They are a great mix of Great Pyrenees, Mastiff and who knows what- so they are sure to be big pups. NOTE: They will be available to meet at our PetSmart Adoption Events in Springfield and Rolla, MO on Saturday, June 27. Come meet them and take one home! If you're interested in adopting me, please fill out an application at www.polkcountyhumanesociety.org/adopt. You can also reserve an appointment to meet me. Some pets are in foster homes or may already have visits scheduled, so appointments help ensure I’ll be available. Polk County Humane Society is located in Bolivar, Missouri, and we welcome adopters from any state. We have access to a transport to Aurora, CO. Other out of state adopters either travel to Missouri or arrange & pay for air transport. Virtual meet and greets are available on the appointment request. ##2755260##

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Photo of Reef

Reef

Mastiff Great Pyrenees

Male, 1 mo
St. Louis, MO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Spayed or Neutered, Shots are up-to-date,
Story
Meet this splashingly adorable puddle of puppies! Introducing Cove, Sea, Brook, Ocean, Reef, Harbor, Bayou, Lake & Creek! They are ready to send waves of love, fun, and playfulness right into your homes. Born to their mama Freya, these pups are going to make excellent dogs. They are a great mix of Great Pyrenees, Mastiff and who knows what- so they are sure to be big pups. NOTE: They will be available to meet at our PetSmart Adoption Events in Springfield and Rolla, MO on Saturday, June 27. Come meet them and take one home! If you're interested in adopting me, please fill out an application at www.polkcountyhumanesociety.org/adopt. You can also reserve an appointment to meet me. Some pets are in foster homes or may already have visits scheduled, so appointments help ensure I’ll be available. Polk County Humane Society is located in Bolivar, Missouri, and we welcome adopters from any state. We have access to a transport to Aurora, CO. Other out of state adopters either travel to Missouri or arrange & pay for air transport. Virtual meet and greets are available on the appointment request. ##2755257##

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Photo of Sea

Sea

Mastiff Great Pyrenees

Female, 1 mo
St. Louis, MO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Spayed or Neutered, Shots are up-to-date,
Story
Meet this splashingly adorable puddle of puppies! Introducing Cove, Sea, Brook, Ocean, Reef, Harbor, Bayou, Lake & Creek! They are ready to send waves of love, fun, and playfulness right into your homes. Born to their mama Freya, these pups are going to make excellent dogs. They are a great mix of Great Pyrenees, Mastiff and who knows what- so they are sure to be big pups. NOTE: They will be available to meet at our PetSmart Adoption Events in Springfield and Rolla, MO on Saturday, June 27. Come meet them and take one home! If you're interested in adopting me, please fill out an application at www.polkcountyhumanesociety.org/adopt. You can also reserve an appointment to meet me. Some pets are in foster homes or may already have visits scheduled, so appointments help ensure I’ll be available. Polk County Humane Society is located in Bolivar, Missouri, and we welcome adopters from any state. We have access to a transport to Aurora, CO. Other out of state adopters either travel to Missouri or arrange & pay for air transport. Virtual meet and greets are available on the appointment request. ##2755254##

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Search for a Mastiff puppy or dog

Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Sullivan, Missouri.

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Mastiff puppies and dogs in nearby cities

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Related breeds in Sullivan, Missouri

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Mastiff shelters & rescues in Sullivan, Missouri

There are animal shelters and rescues that focus specifically on finding great homes for Mastiff puppies in Sullivan, Missouri. Browse these Mastiff rescues and shelters below.

Here are a few organizations closest to you:

Shelter

20 miles

Cuba Mo Animal Control

224 Enterprise Drive, Cuba, MO 65453

Pet Types: cats, dogs

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Shelter

35.5 miles

No Time to Spare Animal Rescue and Sanctuary

27933 Pendleton Lost Creek Rd, Warrenton, MO 63383

Pet Types: dogs, farm animals, horses

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Shelter

44.3 miles

Polk County Humane Society - St. Louis Transport

10900 Sunset Hills Plaza, St. Louis, MO 63127

Pet Types: cats, dogs

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Rescue

47.7 miles

Gods Dogs Rescue of TX for St Louis Transport Stop

St Louis, MO 63146

Pet Types: dogs

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Rescue

49.3 miles

Needy Paws Rescue

St Louis, MO 63125

Pet Types: dogs

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Looking for a specific shelter or rescue?

If you're not seeing what you're looking for, try our shelter and rescue search. We have more than 17,000 organizations in our database with furry pals waiting for a new home!

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Want to learn more about adopting a Mastiff puppy or dog?

We've got all the info you need on adopting and caring for a Mastiff puppy. Check out the links below for everything you ever wanted to know about Mastiff puppies and adults.

Mastiff basics

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Where do Mastiffs come from? How many types of Mastiffs are there? From the history of the breed to question about average height, weight and size, brush up on these basic facts about the Mastiff.

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