Mounted:
!
Attack range: 125
Movement Speed: 345

Not Mounted:
!
Attack Range: 250
Movement Speed:  285

Skaarl the Cowardly Lizard (Passive)
"Mounted: Skaarl takes damage instead of Kled. When Skaarl's health depletes. Kled dismounts. Bonus health applies to Skaarl only.
Dismounted: Kled's abilities change. He gains [100 + 5 per level] (scales with level) movement speed toward enemy champions, but deals 80% damage with his basic attacks.
Kled restores Skaarl's courage by killing enemies and attacking champions, structures, and epic monsters. At 100 courage, Kled remounts with [50% at 1. 60% at 6, 70% at 11, 80% at 16] of Skaarl's health. "

Returning to base mounts Kled.
When you are dismounted, imagine it has having a "health cap" that you can not heal above.
Bonus health only adds to Skaarl's HP. Kled essentially only has base health + health growth when not mounted.

Beartrap on a Rope (Mounted Q)
Cooldown: 9/8.5/8/7.5/7
"Kled throws a bear trap that deals 25/50/75/100/125 (+60% bonus AD) physical damage and hooks onto the first enemy champion or large monster hit. Deals 150% damage to minions passed through.
If Kled stays near a hooked enemy for 1.75 seconds, he deals 50/100/150/200/250 (+120% bonus AD) physical damage, yanks the enemy toward him, and slows the enemy by 40/45/50/55/60% for 1.5 seconds.
Dismounted: Becomes Pocket Pistol, a ranged ability that restores courage."

Pocket Pistol (Unmounted Q)
Cooldown: 2 max ammo, 20 sec ammo recharge & 3 second cooldown.
"Kled fires a gun blast, hurling him backward. Enemies hit take 30/45/60/75/90 (+?) physical damage, plus 20% per additional pellet past the first
Each pellet that hits an enemy champion restores 5% of Skaarl's courage."

Violent Tendencies (W)
Cooldown: 14/12.5/11/9.5/8
"Passive: When Kled basic attacks, he frenzies, gaining 150% attack speed for four attacks or 4 seconds. Violent Tendencies then goes on cooldown.
The fourth hit deals bonus physical damage equal to 20/30/40/50/60 plus 4/5/6/7/8% (+5% per 100 bonus AD) of the target's maximum health."

Jousting (Mounted Only E)
Cooldown: 14/13/12/11/10
"Kled dashes, dealing 20/45/70/95/120 (+60% bonus AD) physical damage to enemies in his path.
If Jousting hits an enemy champion or large monster, Kled gains 50% movement speed for 1 second, and can reactivate this ability to dash back through the same target, dealing the same damage."

CHAAAAAAARGE!!! (Mounted Only R)
Cooldown: 160/140/120
Range: [5000]
"Kled charges toward a location, leaving a trail that grants allies increasing movement speed. While charging, Kled gains a shield that increases over time to a maximum of 200/300/400 (+300% bonus AD) and lasts for 2 seconds after the charge ends.
Skaarl rams the first enemy champion encountered, dealing up to 12/15/18% (+12% per 100 AD) of the target's maximum health as physical damage based on distance traveled."