Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to diagnose mastitis in dogs [title] Check for painful mammary glands. [step] If the dog has mastitis, the mammary glands will cause pain for the dog. The breast area will be firm and swollen because of the fluid from the infection, and it will be hot to the touch.

Ending1: Look for bleeding severe or swollen mammary glands. This will generally indicate a problem that requires immediate veterinary attention. Ending2: If you see these symptoms, it is likely that mastitis is an infection of the mammary glands. [substeps] Call your vet right away if you think you have mastitis. Ending3: [substeps] You can apply cold milk (1% milk substitute if the dog has mastitis) or apply antibiotic cream or lotion. See your vet for a prescription or advice if you suspect your dog may have mastitis. Ending4: The teats may be enlarged or red. [substeps] The mammary glands may also have pus or blood coming from them.

Answer format: ending1/ending2/ending3/ending4