Just like people, your pets can come down with various illnesses or develop minor injuries. Many issues may be alleviated on their own or with home care. However, others may potentially be serious and may require a trip to the vet or even a veterinary hospital in very serious cases. Without verbal communication from your pet, you must rely on your own observations as you determine the best steps to take. These are some of the signs that may indicate the need for immediate medical attention from a vet.