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Many wild Pokémon hold items, some are rare (R) and others very rare (VR). The exact percentages of Rare and Very Rare are uncertain, however. Here is a list of the items:

No.	Pokémon	Item (Rarity)
039	Abra	Twistedspoon (VR)
070	Aron	Hard Stone (VR)
187	Bagon	Dragon Scale (VR)
147	Banette	Spell Tag (VR)
119	Cacnea	Poison Barb (VR)
181	Chinchou	Yellow Shard (VR)
176	Clamperl	Blue Shard (VR)
180	Corsola	Red Shard (VR)
093	Dodrio	Sharp Beak (VR)
092	Doduo	Sharp Beak (VR)
149	Dusclops	Spell Tag (VR)
148	Duskull	Spell Tag (VR)
057	Geodude	Everstone (VR)
164	Girafarig	Persim Berry (VR)
058	Graveler	Everstone (VR)
106	Grimer	Nugget (VR)
095	Gulpin	Big Pearl (VR)
049	Hariyama	King's Rock (VR)
184	Horsea	Dragon Scale (VR)
145	Kecleon	Persim Berry (VR)
108	Koffing	Smoke Ball (VR)
071	Lairon	Hard Stone (VR)
013	Linoone	Oran Berry (R), Sitrus Berry (VR)
046	Loudred	Chesto Berry (VR)
125	Lunatone	Moon Stone (VR)
183	Luvdisc	Heart Scale (R)
082	Magnemite	Metal Coat (VR)
083	Magneton	Metal Coat (VR)
101	Numel	Rawst Berry (R)
156	Pikachu	Oran Berry (R), Light Ball (VR)
010	Poochyena	Pecha Berry (VR)
179	Relicanth	Green Shard (VR)
094	Roselia	Poison Barb (VR)
112	Sandshrew	Quick Claw (VR)
146	Shuppet	Spell Tag (VR)
061	Skitty	Leppa Berry (VR)
126	Solrock	Sun Stone (VR)
114	Spinda	Chesto Berry (VR)
143	Staryu	Stardust (R), Star Piece (VR)
116	Trapinch	Soft Sand (VR)
153	Vulpix	Rawst Berry (R)
045	Whismur	Chesto Berry (VR)
012	Zigzagoon	Oran Berry (VR)