Let's say one of my player plays a druid. And let's assume they reached level 3.

The wolf gains 2 bonus HD, which brings it to 4. In the wolf entry in the MM, it says a 4+ HD wolf grows Large.

Does a druid's wolf animal companion grow larger?

  • \$\begingroup\$ [Related] Animal companion: Wolf to Dire wolf \$\endgroup\$ Commented May 23, 2017 at 15:40
  • 1
    \$\begingroup\$ Possible duplicate of Do druid animal companions get ability points due to high HD? \$\endgroup\$
    – Eldhrimer
    Commented May 24, 2017 at 2:49
  • \$\begingroup\$ the question is not the same, however the answer is so well furnished that the answer applies as-is. it would be poor form to copy-paste without the original answerer's approval... \$\endgroup\$
    – Mouhgouda
    Commented May 24, 2017 at 13:04
  • \$\begingroup\$ oh, thats new.... "That solved my problem!" button i want to know the Worth of keeping them separate, vs accepting the différences... Because i would NEVER have found the answer because ability points was NOT what i was looking for. \$\endgroup\$
    – Mouhgouda
    Commented May 24, 2017 at 13:10

1 Answer 1


No, the bonus HD a druid grants his animal companions are not the same as regular HD gained through Advancement, so you do not trigger any of the regular Advancement features that trigger on reaching certain HD. Which mostly means the size increases.

  • 4
    \$\begingroup\$ So when it says, "An animal companion gains additional skill points and feats for bonus HD as normal for advancing a monster’s Hit Dice (see the Monster Manual)" (PH 36), that list is inclusive, and an animal companion doesn't gain anything else for bonus HD as normal for advancing a monster's Hit Dice? (I know you're correct, but I think some amount of textual evidence should be presented.) \$\endgroup\$ Commented May 23, 2017 at 16:59
  • \$\begingroup\$ @HeyICanChan Additionally, that phrase challenges the conclusion that the wolf doesn't gain the size increase. I think citations are needed. \$\endgroup\$
    – Chemus
    Commented May 25, 2017 at 15:01

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