In Palworld, Pals caught before and at their 10th capture will give EXP bonuses scaled based on the player’s level. The EXP growth scaling looks to be exponential in alignment with the player EXP requirements.
Secrets of the EXP Bonuses in Palworld
Pals caught after the 10th time will give only little EXP in a similar amount to when defeated. In the case of the Tanzees and Lamball, they provide only around 7 EXP without the bonus.
Note that there is no specific “completion” bonus for catching exactly 10 of one Pal species; the wording in-game can be vague, but the EXP Bonus is nearly the same for each of the first 10 catches of each species.
EXP Bonus Unaffected by Pal Level
The EXP Bonus is a massive boost gained regardless of the level of the enemy Pal. You can focus on low-level Pals first without worrying about low EXP gains. Regular Pals and Alpha Bosses follow the same EXP Bonus pattern, regardless of their level.
EXP Bonus Unaffected by Difficulty
EXP bonuses are unaffected by EXP gain rate changes in the World Settings, so while EXP gained elsewhere is different, the method of capturing 10 Pals remains an efficient method for farming even on Hard Difficultly.