diff --git a/src/shapes/aerial.js b/src/shapes/aerial.js
new file mode 100644
index 0000000..f2ac5d0
--- /dev/null
+++ b/src/shapes/aerial.js
@@ -0,0 +1,79 @@
+import { FORM_AERIAL, SIZE_MEDIUM, SIZE_HUGE, SIZE_LARGE } from "./constants"
+import { getDexAttackModifier } from "./utils"
+
+const baseAerialForms = [{
+  id: 'Bat',
+  speed: 20,
+  fly: 30,
+  senses: {
+    echolocation: 40,
+  },
+  diceDamage: 9,
+  agileDiceDamage: 7,
+}, {
+  id: 'Bird',
+  speed: 10,
+  fly: 50,
+  diceDamage: 9,
+  agileDiceDamage: 5.5,
+}, {
+  id: 'Pterosaur',
+  speed: 10,
+  fly: 40,
+  senses: {
+    impreciseScent: 30,
+  },
+  diceDamage: 10.5,
+}, {
+  id: 'Wasp',
+  speed: 20,
+  fly: 40,
+  diceDamage: 11.5,
+}]
+
+function scaleAerialForm (baseForm, level, attackModifier, athleticsModifer) {
+  const form = {
+    type: FORM_AERIAL,
+    size: SIZE_MEDIUM,
+    armorClass: 18 + level,
+    tempHitPoints: 5,
+    senses: {
+      lowLight: true,
+      ...(baseForm.senses || {}),
+    },
+    attackModifier: getDexAttackModifier(attackModifier, 16),
+    athletics: athleticsModifer,
+    damageBonus: 5,
+    reach: 5,
+    ...baseForm,
+  }
+
+  switch (true) {
+    case level >= 11:
+      form.size = SIZE_HUGE
+      form.fly += 15
+      form.reach = 10
+      form.armorClass = 21 + level
+      form.tempHitPoints = 15
+      form.attackModifier = getDexAttackModifier(attackModifier, 21)
+      form.damageBonus = 4
+      form.diceDamage *= 2
+      if (form.agileDiceDamage) {
+        form.agileDiceDamage *= 2
+      }
+      break;
+    case level >= 9:
+      form.size = SIZE_LARGE
+      form.fly += 10
+      form.tempHitPoints = 10
+      form.attackModifier = getDexAttackModifier(attackModifier, 18)
+      form.damageBonus = 8
+      break;
+  }
+
+  return form
+}
+
+export default function scaleAerialForms (level, attackModifier, athleticsModifer) {
+  return baseAerialForms.map(form => scaleAerialForm(form, level, attackModifier, athleticsModifer))
+}
\ No newline at end of file
diff --git a/src/shapes/animal.js b/src/shapes/animal.js
index 398e023..7da84fa 100644
--- a/src/shapes/animal.js
+++ b/src/shapes/animal.js
@@ -11,11 +11,40 @@ const baseAnimalForms = [{
   speed: 30,
   diceDamage: 9,
   agileDiceDamage: 4.5,
+}, {
+  id: 'Bull',
+  speed: 30,
+  diceDamage: 9,
+}, {
+  id: 'Canine',
+  speed: 40,
+  diceDamage: 9,
 }, {
   id: 'Cat',
   speed: 40,
   diceDamage: 7,
   agileDiceDamage: 5.5,
+}, {
+  id: 'Deer',
+  speed: 50,
+  diceDamage: 7,
+}, {
+  id: 'Frog',
+  speed: 25,
+  swim: 25,
+  reach: 15,
+  diceDamage: 7,
+  agileDiceDamage: 5,
+}, {
+  id: 'Shark',
+  speed: 0,
+  swim: 35,
+  diceDamage: 9,
+}, {
+  id: 'Snake',
+  speed: 20,
+  climb: 20,
+  diceDamage: 8.5,
 }]
 
 function scaleAnimalForm (baseForm, level, attackModifier, athleticsModifer) {
diff --git a/src/shapes/constants.js b/src/shapes/constants.js
index df9240e..9d57d79 100644
--- a/src/shapes/constants.js
+++ b/src/shapes/constants.js
@@ -1,6 +1,8 @@
 export const FORM_ANIMAL = 'animal'
+export const FORM_AERIAL = 'aerial'
 export const FORM_DINOSAUR = 'dinosaur'
 export const FORM_DRAGON = 'dragon'
+export const SIZE_MEDIUM = 'medium'
 export const SIZE_LARGE = 'large'
 export const SIZE_HUGE = 'huge'
 export const SIZE_GARGANTUAN = 'gargantuan'
\ No newline at end of file
diff --git a/src/shapes/dinosaur.js b/src/shapes/dinosaur.js
index 8a1e1ad..285e7e3 100644
--- a/src/shapes/dinosaur.js
+++ b/src/shapes/dinosaur.js
@@ -2,16 +2,38 @@ import { FORM_DINOSAUR, SIZE_GARGANTUAN, SIZE_HUGE } from "./constants"
 import { getAttackModifier, getAthleticsModifier } from "./utils"
 
 const baseDinosaurForms = [{
+  id: 'Ankylosaurus',
+  speed: 25,
+  reach: 10,
+  diceDamage: 7,
+}, {
+  id: 'Brontosaurus',
+  speed: 25,
+  reach: 15,
+  diceDamage: 7,
+}, {
+  id: 'Deinonychus',
+  speed: 40,
+  diceDamage: 7,
+  agileDiceDamage: 7,
+}, {
   id: 'Stegosaurus',
   speed: 30,
+  reach: 10,
+  diceDamage: 9,
+}, {
+  id: 'Triceratops',
+  speed: 30,
   diceDamage: 9,
   agileDiceDamage: 7,
+  criticalDamage: 7,
 }, {
   id: 'Tyrannosaurus',
   speed: 30,
   reach: 10,
   diceDamage: 6.5,
   agileDiceDamage: 5.5,
+  criticalDamage: 6.5,
 }]
 
 function scaleDinosaurForm (baseForm, level, attackModifier, athleticsModifer) {
@@ -34,7 +56,7 @@ function scaleDinosaurForm (baseForm, level, attackModifier, athleticsModifer) {
     case level >= 13:
       form.size = SIZE_GARGANTUAN
       form.reach = form.Reach >= 15 ? 25 : 20
-      form.tempHitPoints = 15
+      form.tempHitPoints = 25
       form.armorClass = 21 + level
       form.attackModifier = getAttackModifier(attackModifier, 25)
       form.damageBonus = 15
diff --git a/src/shapes/index.js b/src/shapes/index.js
index ccfc2c9..582a091 100644
--- a/src/shapes/index.js
+++ b/src/shapes/index.js
@@ -1,5 +1,6 @@
 import scaleDinosaurForms from "./dinosaur"
 import scaleAnimalForms from "./animal"
+import scaleAerialForms from "./aerial"
 import scaleDragonForm from "./dragon"
 
 function getBaseAttackModifiers (level) {
@@ -36,6 +37,7 @@ export default function listForms (level) {
 
   return [
     ...scaleAnimalForms(level, attackModifier, athleticsModifier),
+    ...scaleAerialForms(level, attackModifier, athleticsModifier),
     ...scaleDinosaurForms(level, attackModifier, athleticsModifier),
     scaleDragonForm(level, attackModifier, athleticsModifier),
   ]
diff --git a/src/shapes/utils.js b/src/shapes/utils.js
index a51549e..c736827 100644
--- a/src/shapes/utils.js
+++ b/src/shapes/utils.js
@@ -5,6 +5,13 @@ export function getAttackModifier (attackModifier, base) {
   return base
 }
 
+export function getDexAttackModifier (attackModifier, base) {
+  if (attackModifier - 1 > base) {
+    return attackModifier + 1
+  }
+  return base
+}
+
 export function getAthleticsModifier (modifier, base) {
   return modifier > base ? modifier : base
 }