Animal Science is an impacted major at Cal Poly Pomona according to the CPP website. For impacted majors, you can select an alternate non-impacted major in case you are not accepted into your 1st choice. Also impacted majors have higher admission criteria, so I would try to bump up your test scores and GPA prior to applying.
https://www.cpp.edu/~admissions/advising/impacted-majors.shtml?nav=undergrad