Where did you just pull animals from?!
Whatever extreme examples you try and muddy the waters with, consent is really easy for even the least educated of us to understand. The only "change in morality" is that we're now utterly certain you need consent for sex, even within a marriage.
Adult women - capable of consent. As long as all the participants are adult and say yes, whatever they want to be on is on.
Children - not considered legally capable of reliable consent due to age. It's not on and never will be.
Animals - not capable of any kind of reliable consent due to lack of human language. It's not on and never will be.
If you can compare a women consenting to any sort of sex with consenting partner(s) to anyone having sex with an animal, well, you may need to bring your next therapy session forward. You're in crisis, son.