Host-specific sequencing types and antimicrobial-resistance profiles. (A) Distribution of E. coli sequencing types in cats and dogs. (B) Percentage of isolates in each sequencing type resistant to antibiotics. The heatmap shows the percentage of isolates in each ST that is resistant to a panel of antibiotics, including AMC (amoxicillin-clavulanic acid), AXO (ceftriaxone), SXT (trimethoprim-sulfamethoxazole), NAL (nalidixic acid), CIP (ciprofloxacin), TEM (temocillin), CST (colistin), and IMI (imipenem). The number on each bar represents the exact number of positive samples.