We have an attraction to famous people as a society. Add to that, some famous people are well know to be pet owners and animal activists. Bo Derek is one (pic below of Bo and her dogs). Another well known person is Doris Day and her animal rescue activities. Then there are famous sports celebrities who are well known dog lovers. Tiger Woods, before his divorce, was a well known labradoodle owner.
Along with with being dog owners, many celebrities are also horse owners. Check out this web site for more interesting celebrities that are horse owners.