Amalthea.

Amalthea (Ἀμάλθεια) (Amáltheia) was known as a nymph in Greek myths and legends. Also, she was represented as a goat.

Helios and Tethys were Amalthea's parents. 

She fed baby Zeus with goat's milk.

Amalthea had a cornucopia.

Cornucopia.

Cornucopia (Αμαλθείας κέρας) (cornu copiae), or horn of plenty was a symbol of Plutus (Πλοῦτος) (Ploûtos), god of wealth in Greek mythology.

It was a symbol of abundance and wealth. According to legend, the cornucopia was the horn of the goat Amalthea (Ἀμάλθεια) or Achelous (Ἀχελώϊος) (Ἀχελῷος) (Akhelôios), who turned into a bull.

Many gods and goddesses were represented with a cornucopia.

Also, this symbol represented on some coats of arms.