It is going mad on my site....

1363 crawl4.googlebot.com
1040 crawl5.googlebot.com
911 crawl1.googlebot.com
548 crawl2.googlebot.com
532 crawl3.googlebot.com
520 crawl7.googlebot.com
348 crawl8.googlebot.com
222 crawl6.googlebot.com

This is just the first half of July...do other people see this much activity?