Ive been searching the net for a page whit information about
familliars-stats,skills and such. Does anyone know a good site for this?

Taken from Dan Simpson's Baldur's Gate II: Shadows of Amn (PC) & Throne of Bhaal (BG2 Expansion, PC)FAQ/Walkthrough


Alignment Familiar AC HP Abilities
--------------- ------------- -- -- ----------------------------------
Lawful Good Pseudo Dragon -2 24 50% magic resistance, renders
victims unconscious, casts Blur

Neutral Good Pseudo Dragon -2 24 (same as above)

Chaotic Good Fairy Dragon 4 24 32% magic res., casts Invisibility
10' Radius & Mirror Image 1/day

Lawful Neutral Ferret 0 24 50% magic res., 75% Pickpocket,
40% Stealth, 20% Detect Traps

True Neutral Rabbit -4 16 50% Detect Traps, 30% Stealth,
75% resistance to fire, cold, elec

Chaotic Neutral Cat 0 24 Pickpocket, 99% Stealth,
50% magic res.

Lawful Evil Imp 2 18 Polymorphs, 25% magic res.

Neutral Evil Dust Mephit 6 24 Casts Glitterdust 2/day, 10% magic
res.

Chaotic Evil Quasit 2 24 Casts Horror, 25% magic resist.

Note: To get items that were pickpocketed by a Familiar, talk to the
Familiar and ask for any items they have.

Upgraded Familiars:
-------------------

Familiars are upgraded when you complete the regular game by beating
XXXXXXX.

You can now "feed" the familiars to heal them. You can also ask them for
advice.

If you want to see the old BG2 familiar list, it is in the Gameplay
Strategies section below.

Alignment Familiar AC HP Abilities
--------------- ------------- -- -- ----------------------------------
Lawful Good Pseudo Dragon 0 48 35% magic resistance, renders
victims unconscious, casts Blur,
Ghost Armor, Detect Illusion, 2
attacks per round

Neutral Good Pseudo Dragon 0 48 (same as above)

Chaotic Good Fairy Dragon 0 24 45% magic res., casts Invisibility
10' Radius, Imp. Invisibility &
Mirror Image 1/day

Lawful Neutral Ferret -4 48 65% magic res., 95% Pickpocket,
60% Stealth, 60% Detect Traps

True Neutral Rabbit 1 48 85% Detect Traps, 60% Stealth,
65 magic res., 50% detect illusion
always haste

Chaotic Neutral Cat -4 48 Pickpocket, 99% Stealth,
65% magic res, 60% Find Traps.

Lawful Evil Imp -2 48 Polymorphs, 35% magic res., poison
attack, regenerates 1 HP/second

Neutral Evil Dust Mephit 3 48 Casts Glitterdust 2/day, 25% magic
res., Prismatic Spray, Stoneskin,
60% damage resistant, immune to
fire

Chaotic Evil Quasit -2 48 Casts Horror, 35% magic resist.,
immune to fire, cold and elec.,
regenerates 1 Hp/second, 3 attacks
per round, attack reduces target
DEX

Hope thats what you wanted ;)

its perfect, thank you.