These San Francisco-based dogs are up for adoption and in need of a good home

Zulu is a sweet male American Staffordshire terrier and pit bull terrier mix staying at Beyond Rescue.

He's already neutered, has had all his shots and has mastered his house-training etiquette.

Notes from Zulu's caretakers:

Zulu is a sweet, year-old, 60-pound pit mix that was found as a stray. He’s the type of dog that lives in the moment. Zulu finds enjoyment in the little things, whether it’s an old toy he found on the ground or a little chest scratch. His joy is truly infectious. Zulu absolutely loves everyone he meets.

Read more about how to adopt Zulu on Petfinder.

Rusty is a male border terrier and poodle mix staying at DogZone Rescue.

Rusty's ideal forever home would be a dog-free environment. DogZone Rescue wants to place Rusty in a home without small children. Rusty is neutered, has had all his shots and has mastered his house-training etiquette.

Here's more from Rusty:

Hi there, glad to meet you! I am Rusty, but my foster mom calls me Potato. I'm eight years old, and I weigh about 15 pounds. She says I am her favorite couch potato, but don't let the name fool you — I am full of fun and spice. I love riding in the car for a trip to the park or beach. I am an excellent walking buddy. You should see me jump for joy when you show me my leash.

Read more about Rusty on Petfinder.

Tessa is an adorable female chihuahua dog being kept at 4 Dogs Farm Rescue.

Tessa gets along well with children, cats or dogs. She has mastered her house-training etiquette, and she's been vaccinated and spayed.

Tessa's current caretakers say:

This little cutie patootie is Tessa. She's a 5.5-pound, loving, eight-year-old chihuahua. Tessa was dumped at one of our local animal shelters. When we pulled Tessa out from the shelter, she had a mouth full of painful teeth. Today, Tessa has something to smile about, with two teeth left and a fresh new clean mouth. Tessa is on her way to becoming a new dog.

Apply to adopt Tessa today at Petfinder.

Lucky is a charming male hound mix currently housed at 4 Dogs Farm Rescue.

Lucky plays well with others, and he loves other dogs. His vaccinations are already up-to-date, and he is neutered. He's already house-trained, too. 

From Lucky's current caretaker:

This incredibly sweet and happy boy is ready for his forever home. Lucky was found on the streets with an injury to his back leg. The veterinarian believes that someone stabbed Lucky with a knife. We are thankful that this injury didn't leave him with permanent damage to his back leg.

Apply to adopt Lucky today at Petfinder.

Leo is a handsome male chihuahua mix being cared for at Grateful Dogs Rescue.

Leo gets along well with other dogs. Grateful Dogs Rescue, however, thinks he will do best in a home without small children. He's neutered, and he has had all his shots. He has mastered his house-training etiquette.

From Leo's current caretaker:

Little Leo might be just 6.5 pounds, but he will be a massive presence in your heart. Leo is one year old, so he's full of puppy love and enthusiasm for exploration and play and silliness. He might be a bit shy when he meets you, but allow time, and soon you will see the funny little pup that we know and love.

Apply to adopt Leo today at Petfinder.

Toby is a lovable male shepherd and mountain dog mix staying at Asians for Humans Animals and Nature.

Toby is happy to keep company with kids, cats or dogs. He's already house-trained. His vaccinations are up-to-date, and he's neutered.

Notes from Toby's caretakers:

Toby was born with very sweet and gentle nature. He is behaved and doing very well with most other creatures. When there are dogs coming to play, he plays gently. If he meets humans coming toward him, he’ll wag his tail and approach for nice pettings. Toby enjoys quiet moments with humans and stays cuddly.

Read more about Toby on Petfinder.