Dogs

• Difficulty climbing stairs, walking, running, or jumping
• Reluctance to play
• Lameness, limping, or moving with an altered walk
• Stiffness or slowness in rising from a resting position
• Soreness upon being touched
• Frequent yelping or whimpering or lack of vocalization
• Excessive licking of a joint or leg
• Behavioral changes such as withdrawal or aggression
• Change in normal eating habits

Cats

• Hiding or less interaction with the family
• Reluctance or hesitation before jumping
• Reduction in play activity
• Irritation and swatting when hind end petted
• Missing the litter box or loss of litter box training
• Constipation
• Reduced appetite
• Over grooming