Six ivory netsuke of dogs

Six ivory netsuke of dogs
Edo period (1615-1868) or Meiji era (1868-1912), early to late 19th century
The first a dog seated on a base, wearing a collar and with its head turned back, signed Juei with a kao, 5.4cm (2 1/8in) high; the second two pups playing over abalone shells, unsigned, 4.5cm (1¾in) wide; the third a recumbent dog with a pup at its side, unsigned, 4.5cm (1¾in) wide; the fourth a dog seated, protecting a large ball, unsigned, 3.8cm (1½in) high; the fifth a seated pup wearing a knotted collar, unsigned, 3.5cm (3 3/8in) wide; and the sixth a seated dog, turning to the left and protecting a ball, unsigned, 4.5cm (1¾in) wide. (6).