 Though Perry is anthropomorphic , he does not speak , only communicating through an " aggravated purr " type of noise made by flapping his bill . This noise is provided by actor Dee Bradley Baker ; to this day , Povenmire and Marsh do not understand how Baker produces the noise . Thomas Sangster , who plays Ferb , is notoriously good at making the noise and is considered second only to Baker himself . When in his " Agent P " persona , Perry is almost completely silent . 
 Though Perry <a href='drop_aux' title='1'><mark>is</mark></a>anthropomorphic , he <a href='uninflect' title='2'><mark>does</mark></a> not speak , only communicating through an " aggravated purr " type of noise made by flapping his bill . This noise is provided by actor Dee Bradley Baker ; to <a href='None' title='3'><mark>this</mark></a><a href='negative_concord' title='4'><mark>day</mark></a> , Povenmire and Marsh do not understand how Baker <a href='uninflect' title='5'><mark>produces</mark></a> the noise . Thomas Sangster , <a href='null_relcl' title='6'><mark>who</mark></a><a href='uninflect' title='7'><mark>plays</mark></a> Ferb , <a href='drop_aux' title='8'><mark>is</mark></a>notoriously good at making the noise and is considered second only to Baker himself . When in his " Agent P " persona , Perry <a href='drop_aux' title='9'><mark>is</mark></a>almost completely silent . 
Doe Perry anthropomorphic , he do not speak , only communicating thru an " aggravated purr " type of noise made by flapping his bill . This noise is provided by actor Dee Bradley Baker ; to no day , Povenmire and Marsh do not understand how Baker produce the noise . Thomas Sangster , play Ferb , notoriously gud at making the noise and is considered second only to Baker hisself . When in his " Agent P " persona , Perry almost completely silent .