A strong debut for CBS’ newest reality offering - Greatest American Dog - helped the network score a win with the viewers. Meanwhile, FOX was tops with the demos.

8pm

• Greatest American Dog‘s premiere (9.5 million, 2.1/8 in 18-49) easily topped its hour.
• Are You Smarter Than A 5th Grader? (7 million, 2.0/7) tested 1.3 million more this week.
• A repeat of Last Comic Standing* (1.2/4) chalked up 3.5 million.
• Ugly Betty* (3 million, 0.9/3) was up slightly.
• Smallville* (1.8 million, 0.7/3) tacked on another 100,000.

9pm

• CSI* (9.8 million, 2.2/7 in 18-49) improved upon its lead-in.
• So You Think You Can Dance (8.7 million, 3.0/9) grew by 2 million.
• Last Comic Standing (5 million, 2.1/6) was about even with last Thursday.
• Grey’s Anatomy* (3.1 million, 0.9/3) lured in 300,000 more.
• Supernatural* (1.9 million, 0.7/2) nailed down another 500,000.

10pm

• Hopkins (5.5 million, 1.5/5 in 18-49) sewed up an additional 800,000.
• Swingtown (5.4 million, 1.7/5) picked up 700,000.

*denotes repeat

(You can review last Thursday’s ratings here.)