Cause to Believe has numerous close relatives which have sold between $100,000 and $1.5 million.
- CAUSE TO BELIEVE’s dam Imaginary Cat, sold in foal to Unbridled’s Song for $530,000 at the 2009 Keeneland November Sale. She turned 15 in 2010.
- CAUSE TO BELIEVE’s half-sister by Saint Liam sold for $325,000 as a yearling in the 2008 Keeneland September Sale.
- CAUSE TO BELIEVE’S half-brother by Dynaformer sold for $140,000 as a yearling in the 2009 Keeneland September Sale.
- Imaginary Cat’s full sister KATZ ME IF YOU CAN, sold in foal to Indian Charlie for $510,000 at the 2009 Keeneland November Sale. She is the dam of progeny which have sold for $400,000, $340,000 and $185,000.
- Imaginary Cat’s half-sister COUNTRY ROMANCE sold in foal to Broken Vow for $280,000 at the 2009 Keeneland November Sale. She is the dam of progeny which have sold for $1.5 million and $400,000.
- Imaginary Cat’s full sister GENTLY sold in foal to Street Sense for $210,000 at the 2009 Keeneland November Sale.
- Prices under the third dam include $3.6 million, $1.4 million, $800,000, $400,000 etc.

