It's been a busy week for pet food recalls, and while they're all important to note, they're not all created equal.

While one company voluntarily pulled one batch of their raw pet food formula from the market after one consumer discovered small, clear plastic pieces in the bag of food, two other recalls stem from Salmonella.

An important thing to remember is that the sources of Salmonella contamination can vary.

A recall because of Salmonella posted here on Thursday stemmed from an ongoing issue with one company, resulting in recalling all of their animal-based products manufactured at one plant in Colorado.

The latest recall — this time from The Honest Kitchen — but the source of possible Salmonella contamination comes from a plant-based ingredient: human-grade parsley.

The company, in a statement dated Feb. 21 noted that specific lots of their Verve, Thrive and Zeal pet formulas were affected, with item code, product name, production date, expiration date, size and lot numbers listed respectively:

• V4 + VR VERVE 8/20/12 8/20/13 4 lb. box, 10 lb. box 2332A (batches 1-3)
• VR VERVE 11/1/12 11/1/13 10 lb. box 3062A (batches 8 & 9)
• TM THRIVE 9/18/12 9/18/13 1 oz. sample 2622A (batch 3)
• Z4 + ZR ZEAL 8/14/12 8/14/13 4 lb. box & 10 lb. box 2272A (batches 1-5)
• ZR ZEAL 9/21/12 9/21/13 10 lb. box 2652A (batches 1-4)

Lucy Postins, founder, CEO and CMO of The Honest Kitchen noted in the statement:

We are committed to providing the highest-quality human-grade food available to our customers' pets. While our quality control tests did not find evidence of Salmonella in any of our finished products, we are accountable for everything we make, and are taking precautionary action to ensure the safety and integrity of our products.

Read more about the recall and what to do if you've purchased any of these products by clicking here.

You can count on AnnArbor.com to have up-to-date information on pet product related recalls available. Click here to search our archives of previous recalls.

Lorrie Shaw leads the pets section for AnnArbor.com and owner of Professional Pet Sitting. Shoot her an email, contact her at 734-904-7279 or follow her adventures on Twitter.