However, any abuse is too much abuse. No, these dogs aren't mean. If anything, some may be timid at first, but most are extremely affectionate and silly. Every dog is different but most adjust to their new environment and bond with their new owners readily and quickly. Most greyhounds will walk away from confrontation rather than be involved in it.
Some greyhounds are territorial about their beds.
This is because they aren't used to sharing their space with others. Therefore, some of them may grumble or even snap if someone or something tries to share its bed. They have been bred for centuries to chase. Given those two facts, it is unrealistic for us to think that we can break this instinct. Greyhounds love to run and need to have some boundaries in place.