This pictograph is the outine of an animal (four legs and a tail), to which a rope has been added. Hence, it is an ideograph for the verb to lead.
Illustrative Text Reference:
Mohenjo-daro: Seal: M-1684 a: Asko Parpola, B. M. Pande, and Petteri Koskikallio, 2010: Corpus of Indus Seals and Inscriptions: Volume 3,1: Page 14: New material, untraced objects, and collections outside India and Pakistan: Suomalainen Tiedeakatemia.
Image Credit:
Indus Script Sign Number 1055: List of Sign Variants: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General Archaeological Survey of India.