Many of the recognizable names in pet food such as Purina, Iams, or Meow Mix are brands held by larger food production companies such as Nestle SA, Mars Inc, and the J.M. Smucker Company. These are the main players in terms of pet food production while other companies such as PetSmart and Amazon have the market cornered on pet food retail sales. Keep in mind while researching that very often cat and dog food will be taken into consideration together as one form of pet food while food for other pets or animal feed will be considered different.
In light of COVID-19, many business resources are updating their materials to reflect the impact that this virus has had on businesses. For example, IBIS World has added information at the top of their industry reports that discuss the impact of COVID-19 on the industry. IBIS World also offers some tools such as the US Local Data Tool and the US Trade Exposure Tool, both can be found under COVID-19 in the top bar (currently we do not have access to the Impact Tool).
Passport also has a tool for looking at COVID-19 impact accessible from the first page. Almost anything published after March 2020 will likely make mention of the impact that COVID-19 has had on an industry or market.
You can use the following resources to find market share information.
Market share is the percentage of sales (by value or volume) that a brand or company has for a specific product or category.
Note: Market share calculations can range from specific products (i.e. Vanilla flavored ready to drink iced coffee) to extremely broad industries (i.e. food and beverage). Be sure you are aware of which industry segment(s) a report includes.