Dora Helps And Cares About Swiper 

After Swiper gets his puppy book back, all they need to do is find Swiper's Funny Bunny. Then the Little Fox Boy tells Dora his sleepover wouldn't be the same without his funny bunny or puppy book, Just the Affection and care she shows Swiper.... And Swiper would do the same thing for her

I guess when Little ones have sleepovers, they aren't the same without your most loved Possessions like Swiper has said

From The Episode: Swiper's Favorite Things