11K views · 48 reactions | Initially, giving your pet an insulin injection may seem intimidating or overwhelming but over time the process will become just another part of your day. | American Animal Hospital Association (AAHA) | Facebook

The 6 Types of Insulin: A Complete Guide - GoodRx

Insulin pens are common in the United Kingdom, and are generally characterised by a different shape and the fact that they use an insulin cartridge as opposed to a vial.