Pets can’t learn certain skills

Problem

  • Cats & dogs can’t learn hunting
  • Horses can’t learn racing

Cause

It could also be the same skill modifier bug that made Sims not learn the athletic skill anymore and Vampires learn at insane rates.

Solution

  • Use the cheat testingcheatsenabled true and shift-click on the mailbox. Then choose make needs static

Mods that solve the problem

  • Overwatch, V41 or newer fixes this issue.
Credits
SiriusNSassy1176

Further Reading