Companion Spellbond( Player's Handbook II, p. 77)
You form a special magical link with your animal companion, allowing you to share spells with it over a greater distance.
You use your companion's share spells ability out to a range of 30 feet, rather than the standard 5 feet. You can cast touch spells to affect your companion at a greater range than normal. You can change a spell's range from touch to short (range of 25 feet + 5 feet per two caster levels) if the spell targets only your companion.