Gann and his wife Alejandra Varela welcomed their first child on Tuesday, Aug. 13, People reports.
Son Xano William Varela Gann weighed in at 7 pounds, 2 ounces and measured 20.4 inches long when he was born in Los Angeles.
"Alejandra and I are so in love with our little man," Gann told the magazine in a statement. Gann and Varela wed on Feb. 4 in Las Vegas.
Gann not only stars on Wilfred as the four-legged friend of Elijah Wood's character, but he also executive-produces the FX comedy, which is adapted from the original Australian series he created.
Currently in its third season, Wilfred airs Thursdays at 10/9c on FX.