If your cat is receiving a vaccination by injection today, please read this paragraph and sign below: A small number of cats develop a non-painful lump under the skin after they are vaccinated. The vast majority of these lumps disappear spontaneously without treatment. However, on rare occasions (approximately 1 to 10 in 100,000 cats), a potentially serious growth can arise in the area of the vaccination. Should you notice a lump in the area of a vaccination at any time, please do not hesitate to bring your pet in for a no charge examination. Your peace of mind is very important to us. Please feel free to discuss this or anything else that you think may affect the health or happiness of your pet with our practice team.