This is pretty unimportant, but just an idea for down the line that might make jumper more valuable, especially for giving out to new players.
Jumper is (apparently okay - you don’t need to equip it to benefit), and .01% people might seriously use it.
Rather than have it reduce cookie-time, make the pet, upon petting for S seconds as the owner, a 2nd cookie. All jumper dragons share a jumper cooldown. The pet must be fed for this to work. Maybe add some visuals/audio to indicate jumper is ready, and when you are activating it. Add cooldown timer text to the jumper inventory item.