The Art and Science of Applying Mouse Ear Tags

White laboratory mouse

Mus musculus is the species of mouse found most frequently in a variety of laboratories. Because of their genetic similarity to humans, they are the most commonly used mammalian research model in genetics, physiology, psychology, medicine, and other scientific disciplines. For research, experimental, and testing purposes in a laboratory setting, animal identification plays a critical role in managing individual animals. The primary purpose of effective animal identification is twofold:

  • It helps maintain the overall health and comfort of the animals; and
  • It is vital in keeping accurate research records.
Mouse ear tags
Mouse Ear Tags

To that end, there are a variety of options when it comes to the identification of mice and other rodents, including marking the fur and tattooing the toes. However, the application of mouse ear tags is both relatively inexpensive and generally painless. Note that this method is not appropriate for mice that will undergo CT or MRI imaging.

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Livestock Markers: A Useful Tool in the Animal Identification Arsenal

Lambs marked with livestock markers

In past articles we’ve discussed the history of marking livestock for identification purposes, from branding to ear tags to RFID (radio frequency identification). Many of these methods, while effective, are also often permanent in nature, which may not be desirable. They may even involve minor injury to the animal or damage to the skin or coat. But what if you don’t want the I.D. to be permanent (much less cause any pain to the animal)? That is where Ketchum livestock markers prove their worth!

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