The short answer is yes. Professional marketers and professional home builders do not recommend having live pets as part of a marketing program. Many professional agents will provide a checklist of recommendations and advise their sellers that have pets, that there are some basic guidelines that they should follow. For example, remove photos of their pets.
Pets are like part of the family and having a conversation with a seller about their pet can be very sensitive. Matter of fact, one study found that 63% of pet owners felt that their pet is actually part of the family.
To help buyers understand the importance of what they need to do with their pets, they refer them to an article called "Removing Pet Evidence When Selling A Home - a checklist and tips from experts". Check to see how many of these you use.
Bottom Line: Sellers need to realize that not all buyers love pets or they may not love the sellers pet the way they love their own pet.