"I Want a Pet" is a song from the episode "Caveman's Best Friend".
Austin: I've got everything a caveman could need, cave paintings on my wall, cave books I can read! Got a bed of granite, and a fridge made of slate! Got a rock music player, it sounds really great! But something's missin'...deep in my soul, a friend to complete me...make me feel whole! If there was one last thing in this world I could get, I'd want a prehistoric, huggable...lovable pet! I wanna pet, mm-hmm! I wanna pet, that's right! Someone to play with...to go fetch a bone! I wanna pet, mm-hmm! I wanna pet, that's right! I want a tail-waggin' friend of my own!
Austin: I finally found the pet...of my dreams. I really like him a lot, he likes me, it seems! I guess he's kinda wild, but he's so very nice, and he was only five pebbles - a pretty good price! I was all alone...when I walked to the store, but then I walked out...with a new dinosaur! It's the greatest day that I have had yet, I got a prehistoric, huggable...lovable pet! I got a pet, oh, yeah! I got a pet, mm-hmm! Someone to go fetch...whatever I have thrown! I got a pet, mm-hmm! I got a pet, that's right! I got a tail-waggin' friend of my own! I hope the good times with my pup don't end, 'cause he is this caveman's number one best friend. When it comes to this purchase, I don't have a regret! He's just the sweetest little pet that I have ever met! I gotta pet, oh yeah! I got a pet, mm-hmm! A soft companion...in this age of stone! I gotta pet, mm-hmm! I got a pet, that's right! I got a tail-waggin' friend of my own!