Pediatric trauma surgeons frequently encounter severe injuries from animal bites, with dog bites being especially prevalent in children, often leading to facial injuries. This paper details the case of a six-year-old male who suffered a dog bite resulting in a rare proximal right brachial artery injury. The bite caused deep lacerations and avulsion injuries, prompting admission to the trauma center, where nonpalpable right radial and ulnar pulses and arm weakness were observed. Surgical intervention, including wound exploration and brachial artery repair using a saphenous vein graft, successfully restored vascular perfusion. This case underscores the urgency of addressing pediatric dog bite injuries through timely exploration, thorough irrigation, and antibiotic prophylaxis, while also highlighting the need for further research on preventive education and clinical guidelines for assessing vascular injuries in such cases.