Although Pookie is a real meerkat in the Whiskers, it was actually Shakespeare who saved the pup. The real Pookie, however, may have played himself in the scene where he was scent-marked by Zaphod.
Kinkaju was the other babysitter present during Youssarian's(Yossarian) first attempted burrow move.
Yossarian didn't attempt to move burrows again until six days later.
During the second burrow move, Yossarian only transportedMozartand Tosca's(Baddiel) to the surface. He only led Flower's litter to a new burrow. Mozart and Baddiel moved their own litters to the new den by themselves. During the move, one of Mozart's pups fell behind and died.
The scene where "Mozart" notices that her pup is missing is actually Yossarian.