Commission for a dude on FA! I liked how it turned out so posting it here too, also he wrote down some DnD stats for those that like DnD.
Arcane Toad, CR 4

This giant toad is about the size of a horse. It’s squat body has mottled yellowish skin with brown splotches. It shows no apparent concern for your presence.

XP 1,200
N Large Magical Beast
Init +1; Senses low-light vision, scent; Perception +5

DEFENSE
AC 16, touch 10, flat-footed 15 (+1 Dex, +6 natural, -1 size)
hp 42 (5d8+20)
Fort +8, Ref +5, Will +0

OFFENSE
Speed: 30 ft., swim 40 ft.
Melee: bite +7 (2d4+7 plus grab) or tongue +8 touch (grab plus pull)
Space: 10 ft.; Reach 10 ft. (30 ft. with tongue)
Special Attacks: pull (tongue, 10 ft), swallow whole (1d8 bludgeoning damage, AC 13, hp 4), tongue), Breath Weapon (10 foot radius cloud, DC 16, usable every 1d4 rounds)

STATISTICS
Str 20, Dex 13, Con 18, Int 2, Wis 9, Cha 6
Base Atk +3; CMB +9 (+13 grapple), CMD 20 (24 vs. trip)
Feats: Alertness, Jumper, Weapon Focus (tongue)
Skills Acrobatics +9 (+13 jumping), Perception +5, Stealth +1 (+5 in swamps), Swim +17; Racial Modifiers +4 to Acrobatics (+8 jumping) and +8 to Stealth in swamps

SPECIAL ABILITIES

Tongue (Ex)

An arcane toad’s tongue is a primary attack with reach equal to three times the beast’s normal reach (30 ft. for a Large arcane toad). An arcane toad’s tongue deals no damage on a hit but can be used to grab. An arcane toad does not gain the grappled condition while using its tongue in this manner.

Breath Weapon (Su)

When threatened, an arcane toad belches out a cloud of magical gas with a radius of ten feet. Any creature caught in this cloud must succeed a DC 16 fortitude save or be transformed into a toad (as per the Baleful Polymorph spell).

ECOLOGY
Environment: any temperate or warm swamp
Organization: Solitary or pair
treasure: none

Arcane toads are largely docile creatures and will usually ignore adventurers that don’t bother them, though they can become a hazard to certain livestock animals such as sheep or goats if they live near grazing fields. Although harmless to humanoids if given a wide berth, arcane toads will attack if someone approaches within ten feet, usually responding with its magical breath weapon first.

An arcane toad does not see humanoids as prey and will generally not attempt to eat them, but it may bite and reflexively swallow creatures that escape their breath weapon if they continue to attack it. It will not pursue adventurers who flee, and will attempt to flee itself if reduced to half its hit points.