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My name is Sergio!
I'm being cared for by
Key to Lion's Heart Rescue
Adoption process

Submit Application

Facts about me

Terrier (Unknown Type, Medium)
Pet ID

My info

Small blue checkmark Good with dogs
Small blue checkmark Spayed / Neutered

My story

Age: 8 months

Size: ~40 lbs

Estimated breed: Terrier mix


Sergio was found as a stray in rural South Carolina all by himself. He was taken to the dangerously overcrowded shelter, where his odds of getting out were low. As soon as we saw his sweet face we immediately said "yes" to bringing him to Maryland to find his forever home! 


Sergio is around 8 months old and 40 lbs. He is estimated to be a terrier mix, but we can never say for sure! He is a sweet and playful puppy who loves meeting other dogs and people. He takes cues from other dogs very well and loves nothing more than snuggling up to his people. He would love to impress his future family with his smarts in professional training! Like all puppies, he is looking for a forever family with the time, patience, and love to train him into the best boy he can be. 


To adopt Sergio, please apply on our website!


​Please note we cannot guarantee the age or breed of any of our dogs. All of our dogs are working on their house and crate training. 

October 2, 2022, 4:53 pm


Key to Lion's Heart Rescue

Contact info
Pet ID
Derwood, MD 20855

Their adoption process


Submit Application

Additional adoption info

ADOPTION APPLICATION PROCESS AND PROCEDURES Thank you for your interest in adopting a dog through Key to Lion’s Heart Rescue. Key to Lion’s Heart makes no representation on the breed of the dogs. Our dogs are all rescues and therefore, we cannot guarantee what the mix the dog may have based on parentage. We can only base the breed identification on experience and do not consider ourselves experts or professionals on any breed of dog. Once we receive your application we will begin to process it in a timely manner. Submission of your application does not guarantee approval. An approved application is required prior to a meet and greet. Our adoption process will include the following components in order to become an approved applicant/adopter: 1. Checking your personal references. Please be sure to list two personal references that are not related to you. 2. If you do not own your place of residence we will need to call your landlord or leasing office. 3. Veterinarian reference. If you do not have any pets currently in the home, please list the veterinarian you used for any previous pets. We do require all pets in the home to be spayed/neutered as well as up to date on rabies and DHPP vaccines at at the time the application is submitted. 4. Phone interview. One of our adoption coordinators will call and speak with you about your application and dog of choice. 5. Home visit from a Key to Lion’s Heart Rescue volunteer. Once your application is complete, you will be notified of your approval to adopt and will be required to have a meet and greet with the entire household and then can take your new dog/puppy home after signing the adoption contract and paying the specified donation fee. Our fees for puppies up to 6 months is $400 to include age appropriate core vaccines (DHPP and rabies between 12 and 16 weeks old) and microchip. Dogs 6 months to 7 years old are $350 to include routine core vaccines (DHPP and Rabies), spay/neuter (unless unable due to medical) and microchip. All dogs over the age of 7 are $250 to include routine core vaccines(DHPP and Rabies), spay/neuter (unless unable due to medical) and microchip. Please note, we do NOT adopt out more than one dog/puppy at a time. We ask that you take time to bond and learn your new dog for at least 6 months prior to adopting another dog.

Go meet their pets

We are foster based but do hold adoption events twice a month. All events will be listed on our website.

More about this rescue

Key to Lion’s Heart Rescue’s mission is to help save lives of animals that are in shelters or abusive and neglectful situations and give them a chance in life as well as educate the community on animal welfare. We are a foster and volunteer based rescue and rely solely on donations and fundraising to care for our dogs. Through our foster program we provide a loving, nurturing and safe environment for all our animals and address all their needs. We provide all our animals while in our care with vaccines, micro-chips, heartworm test and alter when age appropriate. We provide rehabilitation and training to those in need and work with all our dogs to prepare them for adoption into responsible and loving homes. Through our outreach program we aim to educate the community and our youth about the importance of animal welfare, proper nutrition and the importance of spay/neuter. We will work with the youth by going into the schools and inviting students to participate in our community fundraisers and events. We want them to be a part of the mission to end cruelty and the over population of animals in the shelters. It is our youth that will help change the future of animal welfare.