Humans are a unique and important species, and as the only ones to ever create the concept of rights we are the only ones who inherently deserve them. Giving them to other species should only be done if there are positive effects on us (banning cruelty against animals commonly kept as pets and preserving wild biodiversity are ideas I agree with)

If you believe all living things are equally deserving you better stop killing bugs. Sentience is not rigorously defined.