- A dramatic increase or decrease in respiratory rate
– Changes in gum color from healthy pink to white, yellow, gray, or purple
– Unusual changes in behavior such as aggression or unresponsiveness, weakness, or depression
– Dramatic shifts in appetite, thirst, or weight loss or gain
– Unusual urination or stools
– Vomiting and/or diarrhea
– High fever
– Panting, crying, or hiding can be signs of pain