Us Most racing greyhounds have never seen anything but other racing greyhounds until they come off-track. Small dogs like chihuahuas, large furry dogs like chow-chows, or dogs with no tails, such as boxers, are not a part of the world greyhounds have known.
Greyhounds are extremely dog-social and can easily fit into homes where another breed of dog lives.
But to make sure, we dog-test. Age and personality are also considerations. An older dog might not appreciate an exuberant companion, whereas a young dog might welcome it. We insist on a home visit to any home wanting to adopt a greyhound. One reason for this is to meet the companion animals already living there.