Crystal Cat (CR 1)

Tiny Construct
Alignment: Any (same as creator)
Initiative: +3 (Dex); Senses: low-light vision, scent, Listen +3, and Spot +3
Languages: Cannot speak

AC: 18 (+2 size, +3 Dex, +3 natural), touch 15, flat-footed 13
Hit Dice: 2d10 (11 hp)
Fort +0, Ref +4, Will +1
Speed: 30 ft.
Space: 2-1/2 ft./0 ft.
Base Attack +1; Grapple -9
Attack: Claw +7 melee
Full Attack: 2 claws +7 melee and bite +1 melee
Damage: Claw 1d3-2, bite 1d4-2
Special Attacks/Actions: Sharp hide
Abilities: Str 7, Dex 18, Con -, Int 2, Wis 12, Cha 7
Special Qualities: Construct traits, familiar traits, transparent
Feats: Weapon Finesse
Skills: Balance +12, Climb +8, Hide +20, Jump +12, Listen +3, Move Silently +9, and Spot +3
Climate/Terrain: Any
Organization: Solitary
Treasure/Possessions: None

Source: Dragon #341

Sharp Hide (Ex): Creatures grappling with a crystal cat or attacking it with natural weapons take 1d4 points of slashing damage per round of contact or successful attack as the cat's sharp edges cut into them.

Transparent (Ex): Crystal cats prove difficult to see, even under normal lighting conditions. Characters must make a DC 15 Spot check to even notice a crystal cat. If the cat is actively hiding, the DC equals its Hide check, as usual.

Skills: Crystal cats have a +4 racial bonus on Climb and Move Silently checks and a +8 racial bonus on Balance, Hide, and Jump checks. They use their Dexterity modifier instead of their Strength modifier for Climb and Jump checks.

In combat, crystal cats stick close to their masters, protecting them as best they can. If alone, crystal cats usually flee from combat, relying upon their stealth for safety.