Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to wean kittens [title] Determine when to wean your kitten. [step] The weaning process begins when kittens are around four weeks old. For most kittens, this process is usually completed when they reach eight to ten weeks old.

Ending1: [substeps] Kittens should begin weaning from their mother 12 to 14 weeks after birth. However, weaning sessions can take several days if the mother cat suffers from stressed milk syndrome or glaucoma. Ending2: This is especially true if you are responsible for feeding the baby kitten, caring for him properly, and looking after your newborn kitten. [substeps] During the weaning period you can attempt to wean your kitten from the mother's breast milk. Ending3: However, some kittens take several months to start to wean. [substeps] Male kittens should only get to seven weeks of age; females may need only six weeks. Ending4: Once a kitten has opened its eyes, is able to focus, and can walk steadily, you can begin the process. [substeps] At around 10-14 days, a kitten's eyes and ears start to open.

Answer format: ending1/ending2/ending3/ending4