He walked away with his tail between his legs.
He left the place in shame or a sense of failure.
(Modern Hebrew)
Translation
Expression (Hebrew)
הִסְתַּלֵּק עִם הַזָּנָב בֵּין הָרַגְלַיִים
Definition (Hebrew)
עָזַב אֶת הַמָּקוֹם בְּבוּשָׁה אוֹ תְּחוּשַׁת כִּישָּׁלוֹן.
(הָעִבְרִית הַחֲדָשָׁה)