Pets
A taming item turns a monster into an egg, and the egg hatches into your pet. Zero has 28 of them.
In Zero the eggs enchant a ring All 28 eggs carry the same note: they enchant the Taming Ring . The bonus comes at two levels — the second is the stronger one.
| Monsters | Taming item | Egg | Equipment | Bonus per level |
|---|---|---|---|---|
 Baby Desert Wolf |  Well-Dried Bone |  Baby Desert Wolf Egg |  Transparent Head Protector | Level 1: INT +1MaxSP +50 Level 2: INT +2MaxSP +75 |
 Baphomet Jr. |  Book of the Devil |  Baphomet Jr. Egg |  Skull Helm | Level 1: DEF +1MDEF +1Stun resistance +1 % Level 2: DEF +2MDEF +2Stun resistance +2 % |
 Bongun |  Her Heart unverified |  Bongun Egg |  Grave Keeper's Sword | Level 1: VIT +1Stun resistance +1 % Level 2: VIT +2Stun resistance +2 % |
 Chonchon |  Rotten Fish |  Chonchon Egg |  Monster Oxygen Mask | Level 1: AGI +1FLEE +2 Level 2: AGI +2FLEE +3 |
 Deviruchi |  Contract in Shadow |  Deviruchi Egg |  Pacifier | Level 1: Physical Damage to All Grades of Enemies +1 %MATK +1 % Level 2: Physical Damage to All Grades of Enemies +1 %MATK +1 %MaxHP +1 %MaxSP +1 % |
 Dokebi |  Old Broom |  Dokebi Egg |  Fashion Wig | Level 1: MATK +1 % Level 2: MATK +2 % |
 Drops |  Orange Juice |  Drops Egg |  Poring Pet Backpack | Level 1: HIT +3ATK +3 Level 2: HIT +5ATK +5 |
 Hunter Fly |  Monster Juice |  Hunter Fly Egg | Monster Oxygen Mask | Level 1: Perfect Dodge +2 Level 2: Perfect Dodge +2HIT +1 |
 Isis |  Armlet of Obedience |  Isis Egg |  Queen's Hair Ornament | Level 1: Physical Damage to All Grades of Enemies +1 % Level 2: Physical Damage to All Grades of Enemies +2 % |
 Little Poring |  Little Unripe Apple |  Little Poring Egg | — | Level 1: HP Recovery Rate +50 % Level 2: HP Recovery Rate +75 % |
 Lunatic |  Rainbow Carrot |  Lunatic Egg |  Silk Ribbon | Level 1: CRIT +2ATK +2 Level 2: CRIT +3ATK +3 |
 Munak |  No Recipient |  Munak Egg |  Punisher | Level 1: INT +1DEF +1 Level 2: INT +2DEF +2 |
 Orc Warrior |  Orc Trophy |  Orc Warrior Egg |  Wild Flower | Level 1: ATK +10 Level 2: ATK +15 |
 Peco Peco |  Fatty Chubby Earthworm |  Peco Peco Egg |  Battered Pot | Level 1: MaxHP +150 Level 2: MaxHP +200 |
 Petite unverified |  Shining Stone |  Ground Petite Egg | — | Level 1: After Attack Delay −1 % Level 2: After Attack Delay −1 %AGI +1 |
 Picky |  Earthworm the Dude |  Picky Egg |  Tiny Egg Shell | Level 1: STR +1ATK +5 Level 2: STR +2ATK +8 |
 Poison Spore |  Deadly Noxious Herb |  Poison Spore Egg |  Bark Shorts | Level 1: STR +1INT +1 Level 2: STR +2INT +2 |
 Poporing |  Bitter Herb |  Poporing Egg | Poring Pet Backpack | Level 1: LUK +2Resistance to Poison +10 % Level 2: LUK +3Resistance to Poison +15 % |
 Poring |  Unripe Apple |  Poring Egg | Poring Pet Backpack | Level 1: LUK +2CRIT +1 Level 2: LUK +3CRIT +1 |
 Rocker |  Singing Flower |  Rocker Egg |  Rocker Glasses | Level 1: HP Recovery Rate +5 %MaxHP +25 Level 2: HP Recovery Rate +8 %MaxHP +38 |
 Savage Babe |  Sweet Milk |  Savage Babe Egg |  Green Lace | Level 1: VIT +1MaxHP +50 Level 2: VIT +2MaxHP +75 |
 Smokie |  Baked Sweet Potato |  Smokie Egg |  Red Scarf | Level 1: AGI +1Perfect Dodge +1 Level 2: AGI +2Perfect Dodge +1 |
 Sohee |  Silver Knife of Chastity |  Sohee Egg |  Golden Bell | Level 1: STR +1DEX +1 Level 2: STR +2DEX +2 |
 Spore |  Dew-Laden Moss |  Spore Egg | Bark Shorts | Level 1: HIT +5 Level 2: HIT +8 |
 Steel Chonchon |  Rusty Iron |  Steel Chonchon Egg | Monster Oxygen Mask | Level 1: FLEE +6 Level 2: FLEE +9 |
 Yoyo |  Tropical Banana |  Yoyo Egg |  Monkey Circlet | Level 1: CRIT +3 Level 2: CRIT +5 |
| Fei-chai | — |  Fei-Chai Egg | — | Level 1: AGI +1After Attack Delay −1 % Level 2: AGI +3After Attack Delay −3 % |
| Tai-zi | — |  Tai-zi Egg | — | Level 1: LUK +1Critical Damage +1 % Level 2: LUK +3Critical Damage +3 % |
Where these numbers come from
From the game client, not from a renewal database. Of the 28 pets, 26 are matched to a monster, 26 have a taming item and 24 have their own equipment.
What is missing here is missing on purpose: capture rate, food and hunger values are not in the client. Other sites list them for iRO — but there even the monster stats differ considerably. 2 entries carry an “unverified” mark; that link is not stated in the client.