You can evolve you pets at rappelz-item.com/tag/level/">level 50 for evo 2 and 100 for evo 3. To over breed them you evolve them at level 60 for evo 2 and 115 for evo 3. You should make sure to over breed all your pets, if you do not do so you will have lost out on 25 job points when they reach max level. So by waiting to evolve your pet at level 60 rather than level 50 you gain an extra 10 job points, hence the 60 +10.
By waiting to evolve your pet from 100 to 115 you gain 15 more job points, so that is where the 115 + 25 comes from if you have ever wondered. OK, one more time just to make this clear, do not gimp your pets by evolving them early!
Job points: If you fully over breed your pets they will have a total of 175 job points available to them when they reach 150. Now at first glance this looks like an awful lot of job points, but when you take into account the large number of skills available versus the cost of the skills it is not. There are not enough job points available to make any pet fit every roll.
Skill areas: There are four main skill areas: Actives, Passives, Toggles and Racial Skills. Higher levels of a pets skills are made available at several different levels and evolutions. The percentage or amount added to a pets skill varies by the tier of the pet. Again in most cases I am using a rather generic description of the skill.