The bill about animals comes from a quirk of UK law which this bill was supposed to resolve. And I could understand if he had objected to the upskirting bill if it had not been gender neutral - jokes about what’s underneath kilts, anyone? But that does not seem to be the case.
BTW Parliamentary time is a big problem for bills like these and they can easily get lost through lack of it.
They are bills introduced to the UK Parliament by ordinary MPs rather than by the government. The lucky MPs are determined by random ballot. Very few become law - only those high up on the list have a real chance, and anything put in the way of a bill is likely its downfall due to limited Parliamentary time. Private member’s bills can also be a back way for a government to introduce some ‘quick fix’ legislation - the member gets persuaded to drop his or her pet bill in favour of some bit of legislation the government realises they need to enact.