You may have heard of Friendster.com , the social-networking website. Now meet Dogster.com and Catster.com, two online communities for pets and their owners that are the brainchildren of San Francisco–based Dogster Inc. Register (for free) on either site and create your own Web page, with photos of your pet and a profile that includes her likes and dislikes, nicknames, and breed, as well as links to the Web pages of siblings and pals.

Among the 170,000-plus pets with profiles you might run across are Gus, age seven, an Old English sheepdog in Nokesville, Virginia, who likes peanut butter and dislikes “missing out on the action”; and Eve, an American shorthair kitten in New York City who loves belly rubs and Post-it notes. Don’t miss the pet-friendly travel-booking service, which helps users find hotels worldwide where their pets can stay with them.