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NEW YORK ( TheStreet) -- Here's what Jim Cramer had to say on CNBC's "Squawk On The Street" Thursday: Expectations got too high for Dollar Tree ( DLTR) and the stock is now cooling off. On the flip side, no one expected anything good from NetApp ( NTAP), so when the company delivered so-so results, the stock went higher, Cramer said. Tougher times might be ahead for generic drug maker Perrigo ( PRGO). Cramer said the company didn't blow away the numbers and rivals like Johnson & Johnson ( JNJ) may finally be getting their acts together. Cramer said investors are too negative on Petsmart ( PETM), calling the company one of the great growth stocks of our time. He was also upbeat on Salesforce.com ( CRM), noting that the stock didn't fall on negative analyst comments. Finally, Cramer said shares of Ross Stores ( ROST) will be up again in a few days as once again, expectations had simply gotten too high for the company. --Written by Scott Rutt in Washington, D.C. To contact the writer of this article, click here: Scott Rutt. To follow the writer on Twitter, go to http://twitter.com/scottrutt. To submit a news tip, send an email to: email@example.com.