Wallpaper

if the WP came preinstalled then i dont think you can without rooting

 

funky is completely right, considering you would need to get into certain files that are off limits to nonrooted users.

Otherwise other wallpapers can be shared with others via the gallery application.

 

Cool. Hmm im not sure where stock wallpapers are saved. Id guess it depends on the device. ill have a look around mine....

 

On mine it seems like its an apk containing the wallpapers in /system/app but im not sure and your system could be different

EDIT sorry just remembered thats a live wallpaper. Ill have another look