littermate

my puppy and his littermate love to play together.

we adopted a littermate from the shelter.

littermates often develop strong bonds.

it's important to socialize your littermate early.

my friend has a littermate that looks just like mine.

littermates can sometimes fight over toys.

we brought our littermate to the vet for a check-up.

training a littermate requires patience and consistency.

it's fun to watch littermates grow up together.

having a littermate can help with separation anxiety.