Garfield and Friends (1988)

S2E4 Rip Van Kitty

Garfield's quest for a nap leads him to crash a picnic, prompting Jon to reprimand him for his slothfulness. This scolding sends Garfield into a daydream where he imagines snoozing for two decades. When he finally wakes up, he finds himself in a high-tech future Earth, now overrun by aliens that bear an uncanny resemblance to him.