No. From the SRD, Natural Weapons:
Creatures do not receive additional attacks from a high base attack bonus when using natural weapons.
The "Rules of the Game" column is describing the effects of a Druid class feature, which grants Multiattack to animal companions even if they don't have the prerequisites, and grants a bonus attack if they normally have only one attack. The extra attack has nothing to do with BAB and two attacks is all that Druid's wolf can have, regardless of the Druid's level.
As for the first part of your question, I know of none, but I know very little outside the rules.
As for the second question,
Variant 1 is correct
An awakened animal retains all Animal features, features being a game term that encompasses HD, BAB and Saves.
The spell description states
An awakened animal['s] type becomes magical beast (augmented animal).
Looking at Augmented, we get
A creature with the augmented subtype usually has the traits of its current type, but the features of its original type.
Since awaken does not specify differently, an awakened animal is a "usual" Magical Beast (Augmented Animal), meaning it has the Features of an Animal paired with the traits of a Magical Beast.
Features
An animal has the following features (unless otherwise noted in a creature’s entry).
- 8-sided Hit Dice.
- Base attack bonus equal to ¾ total Hit Dice (as cleric).
- Good Fortitude and Reflex saves (certain animals have different good saves, for instance dire animals have good Fortitude, Reflex, and Will saves).
- Skill points equal to (2 + Int modifier, minimum 1) per Hit Die, with quadruple skill points for the first Hit Die.
Traits
A magical beast possesses the following traits (unless otherwise noted in a creature’s entry).
- Darkvision out to 60 feet and low-light vision.
- Proficient with its natural weapons only.
- Proficient with no armor.
- Magical beasts eat, sleep, and breathe.
Note that by RAW, the replacement of the Animal traits with that of a Magical Beast means that animal loses proficiency with all armor, even if it was war-trained prior to its awakening.
Best Answer
Lycanthropes as Characters states:
The rules for Monsters as Races, along with the rules for Increasing Hit Dice tell you how to do this.
Essentially, the extra hit dice are treated like levels in terms of acquiring feats, skills, and attribute bonuses, as well as being used in calculating Base Attack Bonus, level adjustment, and saves.
For example, suppose you had a level 2 paladin:
Applying the afflicted Werewolf template gives you: