It is known that 1ml=1cm^3. We can use this information to convert the volume to cm^3 and then use the density to find the mass:
[tex]900ml\cdot\frac{1cm^3}{1ml}=900cm^3[/tex][tex]900cm^3\cdot\frac{468kg}{cm^3}=421,200kg[/tex]The mass of blue nose pitbull is 421,200kg.