Boon Companion Tyrannosaurus Rex, 10th Level Ranger


Rules Questions


What would a T-Rex do damage wise if it was considered at level 10 as a Ranger Companion from the feat Boon Companion? I just think it would be neat to play one, or have one as an NPC villain, a ranger with a T-Rex.

Starting Statistics: Size Medium, Speed 30 ft.; AC +4 natural armor; Attack bite (1d8); Ability Scores Str 14, Dex 16, Con 10, Int 2, Wis 15, Cha 10; Special Qualities low-light vision, scent.

7th-Level Adv.: Size Large; AC +3 natural armor; Attack bite (2d6); Ability Scores Str +8, Dex –2, Con +4; Special Qualities grab, powerful bite.

So does that apply the +3 natural armor bonus again, or does that mean the natural armor bonus decreases? I assume increase.

So at 10th level the Tyrannosaurus would have...

Large size, 9d8 hit dice with +6 BAB and 6/6/3 saves, +13 Natural Armor,
9 skills, 5 feats, 4 bonus tricks, +3 to Strength and Dexterity, +2 ability score increases, link, devotion, evasion, share spells, and one additional attack at -5.

The ability scores would be...

26 Strength 18 Dexterity 14 Constitution, 2 Intelligence 15 Wisdom 10 Charisma then, with one ability score increase at 4th level and one at 8th level?

The attack would be at +13, because of -1 to size?

What do you think the 5 feats should be spent on? Should one be spent to get light armor? Power Attack, or would it not hit attackers enough and should it get Weapon Focus Bite instead? Would Improved Natural Weapon be better than Power Attack?

I think the 5 feats would be...
Improved Initiative (Usually a good one), Improved Natural Attack, Toughness (It has low HP), Armor Proficiency (Light) and I am not sure if I should go with Combat Reflexes or Weapon Focus (Bite).

What do you think? And is the math right? Sorry, this is a bit tricky for me. It is like 3.5, but different.


I don't want to poor water on your cool idea, but Tyrannosaurus is not on the list of Ranger animal companion options.

Core Rulebook wrote:
badger, bird, camel, cat (small), dire rat (see the Pathfinder RPG Bestiary), dog, horse, pony, shark, snake (viper or constrictor), or wolf.

To answer questions (as if it were a L.10 Druid animal companion):

  • Natural Armor: Starts with +4, gets +3 for the size shift, and +6 for level (+13 total), as you indicated.
  • The attack would be at +13, because of -1 to size?: Correct
  • Armor proficiency light generally isn't worth it, since MW studded leather or mithril shirt doesn't have an armor check penalty. Can be worth it to get medium or even heavy armor though. (T-Rex in Full plate?)
  • Weapon Focus probably better. Vital Strike also good for the 9th HD feat. Power Attack is awesome (DR can be a real issue for animal companions).
  • Combat Reflexes > Improved Initiative. Go slower, but get a free bite more often.


  • Hmm, I thought a ranger could take animal companions as a druid could?

    Oh well, it will have to be a Neutral Evil Druid mastermind

    Thanks for the advice and rules answers!

    Sovereign Court

    Just use the Beastmaster archetype for Ranger and you can take any animal companion a druid could take.

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