From left to right we have Kristy, Corinna, Jenna, Paddie, Tsara and Heidi.

Kristy and Heidi, the two bookends, are litter sister's and their mum was Tally, above.

Jenna and Paddie, the two dogs in the centre, are Heidi's daughters but different litters.

Tsara and Corinna, the inner bookends, are litter sister's and their mum is Jenna, center back.

Its like trying to describe Bill Clinton's family back in Arkansas.