My name is Cooper!

Mastiff Dog for adoption in Yakima, Washington - Cooper
Photo 1 - Mastiff Dog for adoption in Yakima, Washington - Cooper
Photo 2 - Mastiff Dog for adoption in Yakima, Washington - Cooper
Photo 3 - Mastiff Dog for adoption in Yakima, Washington - Cooper
Photo 4 - Mastiff Dog for adoption in Yakima, Washington - Cooper
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I'm being cared for by:
Rising Phoenix Mastiff Rescue

Facts about Cooper

  • Breed: Mastiff
  • Color: Tan/Yellow/Fawn
  • Age: Young
  • Size: X-Large 101 lbs (46 kg) or more
  • Sex: Male
  • ID#: 10826794

Please take the time to read the entire profile. We spend alot of time putting as much info in them as possible. Thank you in advance.


Cooper is a stunning fawn English mastiff guy. He is a big boy and has a sweet personality. He can be a bit of a moose at first so a home with mastiff experience would be best. He is a stunning dog with natural ears and tail. He is a big boy and as he fills out he is getting bigger and bigger. He is a great dog and we adore him. He is playful and getting more and more so each day. He just didn’t know how to play with us when he came. He is a silly guy who we just adore. He is amazing. He just needs a good home that can give him rules, boundaries and a lot of love.

Recently we took in a number of dogs from another rescue. These dogs were taken in by them and we did not get the full stories on many of them and their histories, as it seemed the rescue disbanded and these dogs were left with out any options. We do not pass judgment when helping dogs and will help dogs when in need. Many of these dogs came to us severely Emaciated. They also had wounds, abscesses, and parasites. We are getting them back to health and as we do we are getting to know them better and better. Gaining the amount of weight many of these giants needed is a slow process, and many of them will need to continue to gain weight for months still. Healthy weight takes time. We try not to gain more then 10 lbs a month of healthy weight. Some of these dogs were 60-70 lbs under weight. These are amazing dogs who deserve a great chance at a wonderful life. These dogs are amazing and cherish every shred of love, grain of food, and soft place to lay. We want nothing more then to give them a wonderful place and family to love them, and make their holiday wishes come true.

Cooper is a great dog and we adore him. He is really a happy go lucky guy who would do best in a home with no other dogs but would also do well in a home with other dogs if the adopters took time to adapt him to a new home. He acts as if a lot of other dogs have attacked him and he is fearful at first. He is a great dog and does really well with people. We do not know how he does with cats, being that he came in from a kennel situation we feel that he was never exposed to them. We have been working with him on cats and have seen some promising behaviors. However he is not going to be a dog that can be tossed in with cats. He will need time and training. He has learned to leave the cats at his foster home alone, but they are all inside and are dog savy. So he will need a home that is going to put the work in with him and cats. We do not think he would do well with small dogs as he is reactive with dogs, and a small dog would likely be seen as prey.   So as with most dogs he may adapt with enough training. He is a great dog who really just needs a good home that will love him. He is smart and willing to please. He just needs a good home that will teach him how to be an amazing pet.

Cooper is up to date, dewormed, flea treated, altered and just a great dog. He is a happy healthy guy now that he is gaining some weight and doing better. He has gained over 50 lbs! He just may need to be watched around food as he has learned to eat as fast as he can. He is a great dog and we adore him. He is learning so much and is doing well with house breaking, crate training and even learning basic commands. Hes done great with people but can be pushy, So we suggest kids over 10, or larger kids that can not be pushed around. He would love to have a family active in his training. He is a great dog and we adore him. He loves to have a good time, and loves to play. He is still a puppy at heart and will play tug and chase for hours. He is a great dog who we adore and know he will find an amazing home. 

We spend a lot of time trying to get to know the dogs in our program as best as we can. This means that we have spent time introducing them to dogs, cats, kids, animals, people and as many things as we can. We try to do as much as we can to evaluate them, both with in our group and if the dogs come from other rescues or shelters their evaluations as well. However dogs are individuals and will react to different situations differently. This means that we do not know how a dog will react in every situation. We give out our best guess based off information provided but the handler of a dog and the way they are introduced to a situation makes a huge impact. So if you have any questions of how to introduce a dog to your home, please let us know and we will provide as much info as we can from pamphlets to helping find a trainer in your area. 

Our rescue aims to help dogs who are passed by and over looked by most rescues and people. We help the dogs who are in need of medical care, vetting, training and breeds that most will not help with. In most shelters if you are large dog, a big dog, or a male dog; from the moment you walk in you are on barrowed time. If you have docked ears or are a guardian breed your time was over before you walked in the doors. We aim to save these dogs and give them a second chance. Please help us save more lives by helping with our medical bills as they grow. This year has already been hard and we have many medical dogs in need.


If you would like to adopt this pet please send us an email. Applications will be sent to you via email. We do our best to get back to emails in 24 hrs. If it has been longer then that please resend another email. We would love to hear from you. We welcome any questions that you may have. Our goal is to find the right fit for every home, not just any home! 

We have been informed that some of the links to email us regarding our adoptable dogs are not working. This has been on going for a few weeks with petfinder and a few other links. If you find this to be an issue that you are having please send an email directly to us at:

If you are inquiring on a specific pet we do ask that you put the name of the pet in the subject line. So we know who it is that you are inquiring regarding. Thank you in advance for understanding as we work through this.

As with any rescue we are always in need of donations. MANY of our dogs come in with special needs or medical issues. These need to be resolved before going home. If you would like to make a donation toward a dogs medical care you can use our paypal address you can also email us for a physical address. We are always in need of dog food, soft food for some of our special needs dogs, collars, leashes, crates, and toys!

About Rising Phoenix Mastiff Rescue

About Our Rescue Group...

We are a no kill non profit mastiff rescue. We work with all breeds of mastiffs including rare breeds and power breeds of mastiffs. Such as Presa, Fila, Corso, Tosa, Dogo, Ect. We are founded by a small group of dedicated people who have a passion for large breed dogs. We often take in animals who are not mastiffs if there is a need. We work with both purebred dogs and mix breeds. We also work with dogs who need further training since many dogs that come in are simply in need of medical care and training. We also work on educating the public to these breeds and helping owners train and help with the dogs they have so that not all are put into rescue. Sometimes the best home is the one they are already in. We spend alot of time on education. We were founded because there was a lack of help for many of the misunderstood mastiff breeds. Many were dieing in shelters and refused by rescues becuase they did not understand the breed. We felt the need so we offered to help.

Donate to Our Rescue Group...

Come Meet Our Pets...

All our adoptions are set up by appointment only. Our dogs are kept in foster homes. Not in a rescue center. This is so we can get to know everyone better. Because of this we can only do adoptions by appointment.

Our Adoption Process...

We require all adopters to fill out an adoption application for the pet they are inquiring about. This gives us basic info if the dog they are interested in even fits their lifestyle. If that is passed we do a home check, and background check as best as we can in the area. We also contact their vets for any info on their current or past animals. If things go well from there we do require them to come meet and greet the animal they are adopting. In some cases its easier for us to bring the animal to them, and that can be done as well to see how everyone gets along. If that goes well we have an adoption contract that must be signed. We require different things for every animal depending on their exact needs. Some cant be around kids, cats, other dogs ect. Some can. But everyone is required to have a fenced yard, Own their home or they must have proof from their landlord that states that the animal is allowed there. Our adoption fees are based on the animal. They help cover the vaccine, alter, vet check, training, and care of the animal. Also they sometimes help on further medical care if more is needed.