Drew Carey and Bob Barker Drew Carey and Bob Barker

Bob Barker, come on down!

The Price Is Right kicks off its special Pet Adoption Week on Monday on CBS (check local listings for times), and it all leads up to Barker's 90th birthday celebration on Thursday.

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Barker, who hosted the long-running game show for 35 years before stepping down, is an animal rights activist and is known for signing off with the plug, "Help control the pet population. Have your pets spayed or neutered." His successor, comedian Drew Carey, has continued the tradition. In this first-look photo above, we see Carey welcoming the TV legend back to his old stomping grounds. Also, check out a sneak peek of Barker's return:Will you tune in for Barker's big 9-0?The Price Is Right airs weekdays on CBS. (Full disclosure: TVGuide.com is owned by CBS.)