Hidden item

During Adventure your pet will sometimes encounter items hidden in a pond, a burrow, a tree or a rock pile. The item usually has a high rarity.

Different species has different terrain abilities, but as of February 1st 2015 it was possible to buy a Skill Box from the USD Shop or the individual skills Skill Rock Smash, Skill Fly, Skill Swim, and Skill Dig from the Explore Shop.

Details
The four different hidden item encounters are:

Swim: You and your pet see something sparkling at the bottom of a pond. Your pet dove into the pond and fetched the item for you.

Dig: You and your pet see something sparkling deep in a burrow. Your pet dug into the burrow and fetched the item.

Fly: You and your pet see something sparkling high up in a tree. Your pet flew up and fetched the item.

Rock Smash: You and your pet see something sparkling deep in a rockpile. Your pet smashed apart the rockpile and fetched the item.

If a pet does not have the skill needed for that particular encounter, the text will be "Your pet couldn't get the item. You had to leave it behind.”. You can check your pet’s profile to see which skill it has under the header “Hidden Item Skills”.

List
The list below is based on a forum thread by Hiiro (#755). Those with empty spaces are either unknown or for pets without a terrain ability.