The Sims 2: Pets Tips

Raise Skill Levels Faster
Skill level affects how long your bars stay raised such as if your cooking skills are at max then the food you cook will have greater hunger value and if you have max skills in cleaning your house bar will remain full longer.

All skills are gained faster by using the most expensive item that contains a skill.

Cooking, Cleaning, and Mechanics - Book Shelf

Creativity - Piano

Charisma - Teaching Pets or useing mirror

Logic - Telescope

Body - Exercise Bench