To fight the bastards, I am using Frenzy to make them kill each other and whittle their health down. Now, I get to these 2 bears, cast Frenzy between them and they start fighting each other. Standard fair. I did NOT expect, however, for one of the Cave Bears to cast a restoration spell on itself.
Every magical effect has it's own little particle effect. The bears had my red glow and pretty pink dots from the Frenzy spell; and when this particular bear got to about a quarter of his life bar, I see the yellow dots and swirly dootles that come from casting a Heal spell, and his health went up.
Note: I am the only (living) human in this entire cave.