| Horsename: | B. Thoughtful |
| Sire: | Don B. |
| Grandsire: | Fleet Nasrullah |
| Dam: | Fluffy Thought |
| Damsire: | Fair Truckle |
| Sex: | Filly |
| Foaled: | 1975 |
| Country: | United States |
| Colour: | Chestnut |
| Breeder: | William R. & Carole S. Bohm |
| Owner: | Walter Haefner |
| Trainer: | Robert L. Wheeler |
| Record: | 19: 9-3-3 |
| Earnings: | US$424,755 |
| Race: | Oak Leaf Stakes (1977) Hollywood Lassie Stakes (1977) Hollywood Nursery Stakes (1977) Anoakia Stakes (1977) Hollywood Oaks (1978) Princess Stakes (1978) La Cañada Stakes (1979) El Encino Stakes (1979) |
B. Thoughtful (foaled 1975 in California) was an American Thoroughbred racemare. Raced by Swiss businessman Walter Haefner and trained by future U.S. Racing Hall of Fame inductee, Robert Wheeler, she won eight stakes races including the Oak Leaf Stakes and Hollywood Oaks.[1]
The B. Thoughtful Stakes, a race for California bred fillies and mares run annually at Hollywood Park Racetrack was named in her honor.[2]