[header] How to sue someone for injuring or killing your pet [title] Document the injury to your pet. [step] You need evidence of the injury or death in order to bring a successful lawsuit. If your pet is injured, you will also want to get immediate treatment. 
Although you may be in shock, you should move quickly and do the following : [substeps] Call the vet or take your pet to the vet. Your pet's health should be your first priority, so get her treatment immediately.