Baby Loves ScienceYES they do.
If you have a toddler in your life these books are a must. They are in board book format and absolutely engaging. The four year old that hangs around my house LOVES these books - and makes up his own quizzes about the objects depicted in the books - just so he can look some more.
Don't settle for imitations - they are out there, but these are the real thing. Look for those authored by Ruth Spiro from Charlesbridge.